Total properties:
16
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Patent #:
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Issue Dt:
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Application #:
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05942365
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Filing Dt:
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Title:
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Patent #:
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Issue Dt:
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01/25/1983
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Application #:
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06021695
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Filing Dt:
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03/19/1979
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Title:
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SIGNAL CONTROL SYSTEM
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Patent #:
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Issue Dt:
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11/03/1981
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Application #:
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06088841
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Filing Dt:
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10/29/1979
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Title:
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RAIL HANDLING TONGS
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Patent #:
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Issue Dt:
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11/15/1983
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Application #:
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06344618
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Filing Dt:
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02/01/1982
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Title:
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HALL EFFECT TRACK CIRCUIT RECEIVING ELEMENT
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Patent #:
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Issue Dt:
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11/22/1983
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Application #:
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06375393
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Filing Dt:
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05/06/1982
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Title:
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MEANS FOR USE ON A RAILROAD TO DISTINGUISH BETWEEN TRACTION CURRENT AND SIGNAL CURRENT
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Patent #:
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Issue Dt:
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04/02/1985
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Application #:
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06461105
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Filing Dt:
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01/26/1983
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Title:
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IMPEDANCE BOND
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Patent #:
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Issue Dt:
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10/27/1987
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Application #:
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06848761
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Filing Dt:
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04/07/1986
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Title:
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SOLID STATE RAILROAD LIGHTS/GATE CONTROLLER
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Patent #:
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Issue Dt:
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01/23/1990
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Application #:
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07269296
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Filing Dt:
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11/10/1988
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Title:
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RAILROAD GATE ARM LAMP CIRCUIT
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Patent #:
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Issue Dt:
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06/11/1991
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Application #:
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07514980
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Filing Dt:
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04/26/1990
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Title:
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AC AND BATTERY BACKUP SUPPLY FOR A RAILROAD CROSSING GATE
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Patent #:
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Issue Dt:
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07/09/1991
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Application #:
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07522667
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Filing Dt:
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05/14/1990
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Title:
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MULTI-FREQUENCY RAILROAD GRADE CROSSING TERMINATION SHUNT ASSEMBLY
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Patent #:
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Issue Dt:
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09/19/1995
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Application #:
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07945236
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Filing Dt:
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09/15/1992
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Title:
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TEMPERATURE COMPENSATED, REGULATED POWER SUPPLY AND BATTERY CHARGER FOR RAILROAD SIGNAL USE
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Patent #:
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Issue Dt:
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05/12/1998
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Application #:
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08617469
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Filing Dt:
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03/15/1996
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Title:
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GEOGRAPHIC TRAIN CONTROL
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Patent #:
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Issue Dt:
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04/07/1998
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Application #:
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08655700
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Filing Dt:
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06/03/1996
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Title:
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RAILROAD TRACK CIRCUIT VITAL RELAY CONTROL
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Patent #:
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Issue Dt:
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11/10/1998
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Application #:
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08924897
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Filing Dt:
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09/08/1997
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Title:
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RAILROAD CROSSING GATE MECHANISM CONTROL SYSTEM
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Patent #:
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Issue Dt:
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12/22/1998
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Application #:
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08994386
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Filing Dt:
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12/19/1997
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Title:
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RAILROAD CROSSING GATE CONTROL SYSTEM INCLUDING A SEPARATE MAINTENANCE RELAY
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Patent #:
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Issue Dt:
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10/08/2002
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Application #:
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09467796
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Filing Dt:
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12/20/1999
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Title:
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RAILROAD VITAL SIGNAL OUTPUT MODULE WITH CRYPTOGRAPHIC SAFE DRIVE
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