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Patent #:
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Issue Dt:
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06/17/1980
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Application #:
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05882127
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Filing Dt:
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02/28/1978
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Title:
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TRANSDUCER POSITIONING SYSTEM FOR ROTATING DISK DRIVE UNITS
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Patent #:
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Issue Dt:
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04/19/1983
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Application #:
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06046130
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Filing Dt:
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06/05/1979
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Title:
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DIGITAL VELOCITY SERVO
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Patent #:
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Issue Dt:
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02/09/1982
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Application #:
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06126021
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Filing Dt:
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02/29/1980
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Title:
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DISK HOUSING FOR DISK MASS STORAGE UNIT INCLUDING INTEGRAL MEANS FOR REDUCING TEMPERATURE DIFFERENTIALS AMONG DISKS
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Patent #:
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Issue Dt:
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08/24/1982
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Application #:
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06126129
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Filing Dt:
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02/29/1980
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Title:
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ROTARY ACTUATOR ASSEMBLY FOR DISK DRIVE HEAD POSITIONER
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Patent #:
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Issue Dt:
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07/06/1982
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Application #:
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06136541
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Filing Dt:
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04/02/1980
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Title:
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DRIVE BELT RELEASE MECHANISM FOR MAGNETIC DISK DRIVES
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Patent #:
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Issue Dt:
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12/28/1982
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Application #:
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06168843
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Filing Dt:
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07/10/1980
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Title:
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METHOD AND APPARATUS FOR DIVIDING A TRACK ON A MAGNETIZABLE INFORMATION STORAGE DISC INTO SECTORS
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Patent #:
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Issue Dt:
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08/30/1983
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Application #:
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06198054
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Filing Dt:
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10/17/1980
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Title:
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SERVO READ/WRITE HEAD ARM ASSEMBLY FOR MAGNETIC DISK DRIVE
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Patent #:
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Issue Dt:
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06/28/1983
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Application #:
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06206008
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Filing Dt:
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11/12/1980
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Title:
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TRANSDUCER POSITIONING SYSTEM AND DATA DISK THEREFOR
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Patent #:
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Issue Dt:
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11/01/1983
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Application #:
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06277060
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Filing Dt:
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06/24/1981
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Title:
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MULTIPLE ERROR DETECTING AND CORRECTING SYSTEM EMPLOYING REED-SOLOMON CODES
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Patent #:
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Issue Dt:
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12/20/1983
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Application #:
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06283163
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Filing Dt:
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07/14/1981
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Title:
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LIGHTWEIGHT DUAL HEAD SUPP0RT ASSEMBLY FOR MAGNETIC DISK DRIVES
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Patent #:
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Issue Dt:
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12/06/1983
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Application #:
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06304209
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Filing Dt:
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09/21/1981
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Title:
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DATA TRANSDUCER POSITION CONTROL SYSTEM FOR ROTATING DISK DATA STORAGE EQUIPMENT
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Patent #:
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Issue Dt:
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07/05/1983
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Application #:
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06305313
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Filing Dt:
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09/24/1981
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Title:
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METHOD OF MOUNTING A MAGNETIC HEAD UNIT ON A MOVABLE CARRIER
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Patent #:
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Issue Dt:
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02/19/1985
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Application #:
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06370572
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Filing Dt:
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04/21/1982
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Title:
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MEMORY CONTROLLER WITH DATA ROTATION ARRANGEMENT
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Patent #:
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Issue Dt:
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03/05/1985
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Application #:
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06375931
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Filing Dt:
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05/07/1982
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Title:
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ARRANGEMENT FOR ENCODING AND DECODING INFORMATION SIGNALS
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Patent #:
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Issue Dt:
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11/20/1984
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Application #:
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06375932
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Filing Dt:
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05/07/1982
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Title:
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PHASE DETECTOR CIRCUIT
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Patent #:
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Issue Dt:
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01/22/1985
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Application #:
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06375933
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Filing Dt:
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05/07/1982
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Title:
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QUALIFIER CIRCUIT
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Patent #:
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Issue Dt:
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08/20/1985
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Application #:
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06376972
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Filing Dt:
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05/10/1982
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Title:
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ADAPTIVE MISPOSITION CORRECTING METHOD AND APPARATUS FOR MAGNETIC DISK SERVO SYSTEM
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Patent #:
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Issue Dt:
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06/11/1985
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Application #:
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06381387
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Filing Dt:
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05/24/1982
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Title:
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MAGNETORESISTIVE TRANSDUCER USING AN INDEPENDENT RECESSED ELECTROMAGNETIC BIAS
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Patent #:
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Issue Dt:
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03/05/1985
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Application #:
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06382550
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Filing Dt:
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05/27/1982
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Title:
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DISK HUB SPINDLE SYSTEM
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Patent #:
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Issue Dt:
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08/27/1985
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Application #:
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06439897
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Filing Dt:
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11/08/1982
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Title:
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AERODYNAMICALLY RELEASED SAFETY LATCH FOR DATA TRANSDUCER ASSEMBLY IN ROTATING RIGID DISK DATA STORAGE DEVICE
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Patent #:
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Issue Dt:
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12/25/1984
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Application #:
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06442129
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Filing Dt:
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11/16/1982
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Title:
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PURE TORQUE,LIMITED DISPLACEMENT TRANSDUCER
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Patent #:
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Issue Dt:
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08/27/1985
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Application #:
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06458450
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Filing Dt:
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01/17/1983
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Title:
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AMPLIFIER CIRCUIT
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Patent #:
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Issue Dt:
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05/07/1985
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Application #:
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06475599
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Filing Dt:
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03/15/1983
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Title:
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ROTATING RIGID DISK DATA STORAGE DEVICE
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Patent #:
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Issue Dt:
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12/16/1986
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Application #:
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06483340
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Filing Dt:
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04/08/1983
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Title:
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VERTICALLY LOADING HEAD MODULE FOR MAGNETIC DISK DRIVE
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Patent #:
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Issue Dt:
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04/21/1987
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Application #:
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06496924
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Filing Dt:
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05/23/1983
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Title:
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DATA TRANSDUCER POSITION CONTROL SYSTEM FOR ROTATING DISK DATA STORAGE EQUIPMENT
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Patent #:
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Issue Dt:
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11/11/1986
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Application #:
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06505047
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Filing Dt:
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06/16/1983
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Title:
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MAGNETIC TACHOMETER FOR DISK DRIVES
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Patent #:
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Issue Dt:
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12/23/1986
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Application #:
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06529840
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Filing Dt:
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09/06/1983
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Title:
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READ/WRITE HEAD POSITIONER ARRANGEMENT
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Patent #:
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Issue Dt:
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06/03/1986
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Application #:
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06538811
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Filing Dt:
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10/05/1983
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Title:
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OPTICAL ENCODER WITH DIGITAL GAIN COMPENSATION CONTROLLING SOURCE INTENSITY
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Patent #:
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Issue Dt:
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11/25/1986
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Application #:
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06555591
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Filing Dt:
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11/28/1983
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Title:
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MOUNTING ASSEMBLY FOR AN OPTICAL ENCODER APPARATUS AND METHODS
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Patent #:
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Issue Dt:
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04/08/1986
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Application #:
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06560478
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Filing Dt:
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12/12/1983
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Title:
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MAGNETIC PLATED MEDIA AND PROCESS THEREOF
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Patent #:
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Issue Dt:
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01/28/1986
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Application #:
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06596438
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Filing Dt:
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04/03/1984
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Title:
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DATA TRANSDUCER POSITION CONTROL SYSTEM FOR ROTATING DISK DATA STORAGE EQUIPMENT
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Patent #:
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Issue Dt:
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03/03/1987
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Application #:
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06609224
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Filing Dt:
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05/11/1984
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Title:
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OPTICAL ENCODER HAVING CONTROLLABLE LEAD -LAG PHASE TRIM SENSITIVITY
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Patent #:
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Issue Dt:
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12/30/1986
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Application #:
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06670825
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Filing Dt:
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11/13/1984
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Title:
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PHASE-LOCKED LOOP FOR MFM DATA RECORDING
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Patent #:
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Issue Dt:
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03/03/1987
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Application #:
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06728674
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Filing Dt:
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04/29/1985
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Title:
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AERODYNAMIC LATCH FOR DISK FILE ACTUATOR
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Patent #:
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Issue Dt:
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04/28/1987
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Application #:
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06741174
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Filing Dt:
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06/04/1985
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Title:
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OPTICAL ENCODER WHICH USE A RECTANGULAR PHOTODETECTOR ARRAY
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Patent #:
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Issue Dt:
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01/27/1987
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Application #:
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06741175
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Filing Dt:
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06/04/1985
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Title:
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MODULAR UNITARY DISK FILE SUBSYSTEM
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Patent #:
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Issue Dt:
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04/04/1989
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Application #:
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06741588
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Filing Dt:
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06/05/1985
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Title:
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MICROPROCESSOR CONTROLLED RIGID DISK FILE SUBSYSTEM
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Patent #:
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Issue Dt:
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10/13/1987
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Application #:
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06792756
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Filing Dt:
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10/30/1985
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Title:
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MEMORY FOR A DIGITAL DATA PROCESSING SYSTEM INCLUDING CIRCUIT FOR CONTROLLING REFRESH OPERATIONS DURING POWER-UP AND POWER-DOWN CONDITIONS
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Patent #:
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Issue Dt:
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01/27/1987
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Application #:
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06806082
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Filing Dt:
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12/06/1985
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Title:
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DISK DRIVE HAVING TWO INTERACTIVE ELECTROMECHANICAL CONTROL SUBSYSTEMS
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Patent #:
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Issue Dt:
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10/28/1986
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Application #:
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06813594
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Filing Dt:
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12/26/1985
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Title:
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MAGNETIC PLATED MEDIA
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Patent #:
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Issue Dt:
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05/26/1987
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Application #:
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06834009
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Filing Dt:
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02/27/1986
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Title:
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HIGH CAPACITY DISK FILE WITH EMBEDDED SECTOR SERVO
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Patent #:
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Issue Dt:
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06/23/1987
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Application #:
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06850850
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Filing Dt:
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04/11/1986
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Title:
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INTEGRATED ENCODER DECODER FOR VARIABLE LENGTH, ZERO RUN LENGTH LIMITED CODES
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Patent #:
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Issue Dt:
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12/22/1987
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Application #:
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06864588
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Filing Dt:
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05/16/1986
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Title:
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DATA ENCODER SYSTEM
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Patent #:
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Issue Dt:
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04/25/1989
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Application #:
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06946891
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Filing Dt:
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03/20/1987
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Title:
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SECONDARY STORAGE FACILITY EMPLOYING SERIAL COMMUNICATIONS BETWEEN DRIVE AND CONTROLLER
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Patent #:
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Issue Dt:
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11/10/1987
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Application #:
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07029328
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Filing Dt:
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03/23/1987
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Title:
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SHOCK AND VIBRATION ISOLATION MOUNTING
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Patent #:
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Issue Dt:
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08/08/1989
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Application #:
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07047627
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Filing Dt:
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05/07/1987
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Title:
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ERROR CORRECTION CODE ENCODER
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Patent #:
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Issue Dt:
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11/08/1988
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Application #:
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07052012
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Filing Dt:
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05/19/1987
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Title:
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HIGH CAPACITY DISK FILE WITH EMBEDDED SECTOR SERVO AND SCSI INTERFACE
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Patent #:
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Issue Dt:
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04/25/1989
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Application #:
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07052709
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Filing Dt:
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05/20/1987
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Title:
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MODULAR UNITARY DISK FILE SUBSYSTEM HAVING INCREASED DATA STORAGE CAPACITY
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Patent #:
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Issue Dt:
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05/28/1991
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Application #:
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07065931
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Filing Dt:
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06/24/1987
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Title:
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OVERWRITING SYSTEM FOR MAGNETO-OPTICAL RECORDING WITH SELF TIMING TRACK
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Patent #:
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Issue Dt:
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12/04/1990
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Application #:
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07067712
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Filing Dt:
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06/26/1987
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Title:
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AN APPARATUS FOR DIVIDING ELEMENTS OF A GALOIS FIELD GF(2QM)
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Patent #:
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Issue Dt:
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02/21/1989
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Application #:
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07069407
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Filing Dt:
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07/01/1987
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Title:
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DIFFERENTIAL AMPLIFIER CIRCUIT
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Patent #:
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Issue Dt:
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07/11/1989
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Application #:
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07070689
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Filing Dt:
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07/07/1987
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Title:
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METHOD AND APPARATUS FOR ENCODING MAGNETIC DISK SECTOR ADDRESSES
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Patent #:
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Issue Dt:
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10/23/1990
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Application #:
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07084577
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Filing Dt:
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08/12/1987
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Title:
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MAGNETO -OPTICAL DATA RECORDING DEVICE USING A WAVELENGTH AND POLARIZATION-SENSITIVE SPLITTER
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Patent #:
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Issue Dt:
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01/03/1989
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Application #:
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07084985
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Filing Dt:
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08/12/1987
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Title:
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HYDRODYNAMIC BEARING
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Patent #:
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Issue Dt:
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03/28/1989
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Application #:
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07092952
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Filing Dt:
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09/04/1987
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Title:
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PROCESS FOR PRODUCTION OF MAGNETIC MEDIA
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Patent #:
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Issue Dt:
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04/11/1989
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Application #:
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07093195
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Filing Dt:
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09/04/1987
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Title:
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DISK EXTENDER BAFFLES
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Patent #:
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Issue Dt:
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02/27/1990
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Application #:
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07093196
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Filing Dt:
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09/04/1987
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Title:
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ANALOG AMPLIFIER-MULTIPLEXER FOR A DATA SYSTEM
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Patent #:
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Issue Dt:
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05/15/1990
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Application #:
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07093219
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Filing Dt:
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09/04/1987
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Title:
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TUNED ARRAY VIBRATION ABSORBER
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Patent #:
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Issue Dt:
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05/09/1989
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Application #:
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07093220
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Filing Dt:
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09/04/1987
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Title:
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AUTOMATIC DC RESTORER STAGE FOR SERVO DATA AMPLIFIER
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Patent #:
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Issue Dt:
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09/06/1988
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Application #:
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07093396
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Filing Dt:
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09/04/1987
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Title:
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APPARATUS AND METHOD FOR PROVIDING A CURRENT EXPONENTIALLY PROPORTIONAL TO VOLTAGE AND DIRECTLY PROPORTIONAL TO TEMPERATURE
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Patent #:
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Issue Dt:
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07/18/1989
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Application #:
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07093810
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Filing Dt:
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09/04/1987
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Title:
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AUTOMATIC GAIN CONTROL SYSTEM
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Patent #:
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Issue Dt:
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04/03/1990
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Application #:
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07098913
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Filing Dt:
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09/21/1987
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Title:
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MEDIA DEFECT MANAGEMENT WITHIN DISK DRIVE SECTOR FORMAT
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Patent #:
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Issue Dt:
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10/24/1989
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Application #:
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07104814
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Filing Dt:
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10/02/1987
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Title:
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PROGRAMMED RATIO MECHANICAL TRANSMISSION
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Patent #:
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Issue Dt:
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03/13/1990
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Application #:
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07115238
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Filing Dt:
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10/30/1987
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Title:
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DATA DECODING CIRCUIT INCLUDING PHASE-LOCKED LOOP TIMING
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Patent #:
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Issue Dt:
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11/28/1989
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Application #:
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07128802
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Filing Dt:
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12/04/1987
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Title:
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SELF-LOADING HEAD ASSEMBLY FOR DISK DRIVES
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Patent #:
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Issue Dt:
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05/09/1989
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Application #:
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07128947
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Filing Dt:
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12/04/1987
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Title:
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METHOD FOR PRODUCING HALL EFFECT SENSOR FOR MAGNETIC RECORDING HEAD
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Patent #:
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Issue Dt:
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04/03/1990
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Application #:
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07141204
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Filing Dt:
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01/06/1988
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Title:
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SYNCHRONIZATION FOR STORED DATA
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Patent #:
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Issue Dt:
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09/12/1989
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Application #:
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07146850
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Filing Dt:
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01/22/1988
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Title:
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REAL-TIME BCH ERROR CORRECTION CODE DECODING MECHANISM
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Patent #:
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Issue Dt:
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07/18/1989
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Application #:
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07148944
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Filing Dt:
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01/27/1988
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Title:
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METHOD AND APPARATUS FOR PRODUCING MAGNETICALLY ORIENTED FILMS ON SUBSTRATES
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Patent #:
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Issue Dt:
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03/21/1989
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Application #:
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07150994
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Filing Dt:
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02/01/1988
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Title:
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DATA TRANSDUCER POSITION CONTROL SYSTEM FOR ROTATING DISK DATA STORAGE EQUIPMENT
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Patent #:
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Issue Dt:
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08/14/1990
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Application #:
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07160883
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Filing Dt:
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02/26/1988
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Title:
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CERAMIC SUPPORT ARM FOR MOVABLY POSITIONING TRANSDUCERS
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Patent #:
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Issue Dt:
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03/27/1990
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Application #:
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07166511
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Filing Dt:
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03/09/1988
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Title:
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METHOD FOR FABRICATING MAGNETIC RECORDING POLES
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Patent #:
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Issue Dt:
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07/21/1992
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Application #:
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07166514
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Filing Dt:
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03/09/1988
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Title:
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VIBRATION ISOLATING MOUNT
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Patent #:
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Issue Dt:
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03/27/1990
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Application #:
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07171964
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Filing Dt:
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03/23/1988
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Title:
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CLAMP FOR MOUNTING HEAD-LOAD BEAM SLIDER ARM IN A DISK DRIVE
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Patent #:
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Issue Dt:
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08/07/1990
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Application #:
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07172288
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Filing Dt:
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03/23/1988
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Title:
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DETACHABLE HEAD-LOAD BEAM SLIDER ARM FOR DISK DRIVE
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Patent #:
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Issue Dt:
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01/30/1990
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Application #:
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07178295
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Filing Dt:
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04/06/1988
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Title:
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LOCK AND SHOCK MOUNTED DEVICE FOR COMPUTER DISK DRIVE
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Patent #:
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Issue Dt:
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03/17/1992
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Application #:
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07189773
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Filing Dt:
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05/03/1988
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Title:
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TESTING ASYNCHRONOUS PROCESSES
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Patent #:
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Issue Dt:
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04/02/1991
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Application #:
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07192353
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Filing Dt:
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05/10/1988
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Title:
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HIGH PERFORMANCE, HIGH CAPACITY MICRO-WINCHESTER DISK DRIVE
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Patent #:
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Issue Dt:
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04/14/1992
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Application #:
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07192950
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Filing Dt:
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05/12/1988
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Title:
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OPTICAL HEAD WITH FLYING LENS
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Patent #:
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Issue Dt:
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07/30/1991
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Application #:
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07193090
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Filing Dt:
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05/12/1988
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Title:
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HIGH EFFICIENCY DISK FORMAT AND SYNCHRONIZATION SYSTEM
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Patent #:
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Issue Dt:
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01/29/1991
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Application #:
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07193109
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Filing Dt:
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05/12/1988
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Title:
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SECTOR MIS-SYNCHRONIZATION DETECTION METHOD
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Patent #:
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Issue Dt:
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03/13/1990
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Application #:
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07193347
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Filing Dt:
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05/12/1988
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Title:
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AN IMPROVED DECORDER
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Patent #:
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Issue Dt:
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02/13/1990
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Application #:
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07193417
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Filing Dt:
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05/12/1988
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Title:
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METHOD OF PRODUCING A POLE PIECE WITH IMPROVED MAGNETIC DOMAIN STRUCTURE
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Patent #:
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Issue Dt:
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11/06/1990
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Application #:
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07202882
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Filing Dt:
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06/06/1988
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Title:
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DATA DEMODULATION SYSTEM
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Patent #:
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Issue Dt:
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10/31/1989
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Application #:
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07205490
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Filing Dt:
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06/06/1988
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Title:
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LITHOGRAPHIC TECHNIQUE USING LASER FOR FABRICATION OF ELECTRONIC COMPONENTS AND THE LIKE
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Patent #:
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Issue Dt:
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09/19/1989
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Application #:
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07221673
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Filing Dt:
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07/20/1988
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Title:
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METHOD FOR MOUNTING A MAGNETIC HEAD ON A SUSPENSION ARM
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Patent #:
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Issue Dt:
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02/18/1992
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Application #:
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07227808
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Filing Dt:
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08/03/1988
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Title:
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FLUX SPREADING THIN FILM MAGNETIC DEVICES
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Patent #:
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Issue Dt:
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08/15/1989
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Application #:
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07234556
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Filing Dt:
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08/22/1988
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Title:
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MODULAR UNITARY DISK FILE SUBSYSTEM WITH DIFFERING DENSITY ZONES
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Patent #:
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Issue Dt:
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04/24/1990
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Application #:
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07242067
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Filing Dt:
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09/08/1988
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Title:
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RELEASABLE SERVO WRITING FIXTURE CONNECTOR
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Patent #:
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Issue Dt:
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12/26/1989
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Application #:
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07250037
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Filing Dt:
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09/27/1988
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Title:
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AUTOMATIC SERVO GAIN CALIBRATION SYSTEM FOR A DISK DRIVE
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Patent #:
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Issue Dt:
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12/04/1990
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Application #:
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07266089
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Filing Dt:
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11/02/1988
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Title:
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DIGITAL PHASE LOCKED LOOP
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Patent #:
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Issue Dt:
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08/22/1989
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Application #:
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07277024
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Filing Dt:
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11/28/1988
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Title:
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A METHOD FOR USING A MODULAR UNITARY DISK FILE SUBSYSTEM
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Patent #:
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Issue Dt:
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08/20/1991
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Application #:
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07278006
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Filing Dt:
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11/30/1988
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Title:
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REMOVABLE AND TRANSPORTABLE HARD DISK SUBSYSTEM
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Patent #:
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Issue Dt:
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10/30/1990
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Application #:
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07280997
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Filing Dt:
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12/07/1988
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Title:
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REMOVABLE HARD DISK DRIVE MODULE
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Patent #:
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Issue Dt:
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10/03/1989
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Application #:
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07326166
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Filing Dt:
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03/20/1989
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Title:
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DATA TRANSDUCER POSITION CONTROL SYSTEM FOR ROTATING DISK DATA STORAGE EQUIPMENT
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Patent #:
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Issue Dt:
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11/21/1989
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Application #:
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07329400
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Filing Dt:
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03/27/1989
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Title:
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MICROPROCESSOR CONTROLLED RIGID DISK FILE SUBSYSTEM
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Patent #:
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Issue Dt:
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05/14/1991
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Application #:
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07343907
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Filing Dt:
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04/26/1989
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Title:
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AN INTEGRAL BALANCED-MOMENT HEAD POSITIONER
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Patent #:
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Issue Dt:
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11/30/1993
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Application #:
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07344990
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Filing Dt:
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04/28/1989
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Title:
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HYDROGENATED CARBON COMPOSITIONS
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Patent #:
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Issue Dt:
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04/24/1990
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Application #:
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07364810
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Filing Dt:
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06/09/1989
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Title:
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FIXED DISK DRIVE
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Patent #:
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Issue Dt:
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01/05/1993
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Application #:
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07364900
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Filing Dt:
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06/12/1989
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Title:
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MAGNETIC MEDIUM FOR LONGITUDINAL RECORDING
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