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Patent #:
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Issue Dt:
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12/11/1979
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Application #:
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05906772
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Filing Dt:
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05/17/1978
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Title:
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TELEPHONE LINE CIRCUIT
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Patent #:
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Issue Dt:
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01/20/1981
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Application #:
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05933984
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Filing Dt:
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08/16/1978
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Title:
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ON BOARD INTEGRATED CIRCUIT CHIP SIGNAL SOURCE
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Patent #:
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Issue Dt:
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09/02/1980
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Application #:
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06030196
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Filing Dt:
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04/16/1979
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Title:
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RINGING GENERATOR
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Patent #:
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Issue Dt:
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01/13/1981
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Application #:
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06046346
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Filing Dt:
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06/07/1979
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Title:
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SWITCHING MATRIX
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Patent #:
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Issue Dt:
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07/28/1981
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Application #:
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06062989
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Filing Dt:
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08/02/1979
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Title:
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TELEPHONE LINE CIRCUIT
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Patent #:
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Issue Dt:
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03/23/1982
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Application #:
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06069054
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Filing Dt:
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08/23/1979
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Title:
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TRUNK CIRCUIT WITH SINGLE COUPLING TRANSFORMER
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Patent #:
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Issue Dt:
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12/08/1981
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Application #:
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06083076
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Filing Dt:
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10/09/1979
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Title:
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PBX FIELD DISPLAY
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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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06092609
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Filing Dt:
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11/08/1979
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Title:
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METHOD OF MAKING INTEGRATED CMOS AND CTD BY SELECTIVE INPLANTATION
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Patent #:
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Issue Dt:
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10/06/1981
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Application #:
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06100949
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Filing Dt:
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12/06/1979
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Title:
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RINGING DECODER CIRCUIT
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Patent #:
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Issue Dt:
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03/15/1983
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Application #:
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06205255
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Filing Dt:
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11/10/1980
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Title:
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KEYLESS AND INDICATORLESS LOCAS TELEPHONE SWITCHING SYSTEM
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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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06219110
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Filing Dt:
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12/22/1980
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Title:
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A CHARGE REDISTRIBUTION CIRCUIT HAVING REDUCED AREA
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Patent #:
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Issue Dt:
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11/06/1984
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Application #:
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06285654
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Filing Dt:
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07/21/1981
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Title:
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VOICE RECOGNIZING TELEPHONE CALL DENIAL SYSTEM
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Patent #:
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Issue Dt:
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07/10/1984
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Application #:
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06286871
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Filing Dt:
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07/20/1981
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Title:
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HOME TELEPHONE EXCHANGE
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Patent #:
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Issue Dt:
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04/09/1985
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Application #:
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06327196
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Filing Dt:
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12/03/1981
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Title:
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TIME DIVISION SWITCHING MATRIX
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Patent #:
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Issue Dt:
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10/02/1984
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Application #:
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06356607
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Filing Dt:
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03/09/1982
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Title:
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A TELEPHONE
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Patent #:
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Issue Dt:
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10/16/1984
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Application #:
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06356608
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Filing Dt:
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03/09/1982
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Title:
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VOICE AND DATA TELEPHONE SET
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Patent #:
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Issue Dt:
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10/02/1984
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Application #:
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06356609
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Filing Dt:
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03/09/1982
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Title:
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A TELEPHONE CONTROL UNIT
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Patent #:
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Issue Dt:
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10/02/1984
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Application #:
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06356610
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Filing Dt:
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03/09/1982
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Title:
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A COMBINED TELEPHONE INTER COMMUNICATION AND AUTOMATIC TELEPHONE DIAL- ING DEVICE
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Patent #:
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Issue Dt:
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06/18/1985
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Application #:
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06372690
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Filing Dt:
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04/28/1982
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Title:
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INTEGRATED CIRCUIT PLANARIZING PROCESS
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Patent #:
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Issue Dt:
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06/04/1985
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Application #:
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06394424
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Filing Dt:
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07/01/1982
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Title:
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PRINTED CIRCUIT BOARD LOCK
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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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06416612
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Filing Dt:
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09/10/1982
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Title:
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HOME COMMUNICATIONS AND CONTROL SYSTEM
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Patent #:
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Issue Dt:
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08/26/1986
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Application #:
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06422188
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Filing Dt:
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09/23/1982
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Title:
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TWO WIRE VOICE AND DATA SUBSCRIBER LOOP
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Patent #:
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Issue Dt:
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10/01/1985
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Application #:
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06470240
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Filing Dt:
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02/28/1983
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Title:
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VIDEO DISPLAY TERMINAL
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Patent #:
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Issue Dt:
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09/10/1985
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Application #:
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06518191
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Filing Dt:
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07/28/1983
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Title:
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SUBSCRIBER LINE INTERFACE CIRCUIT
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Patent #:
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Issue Dt:
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10/01/1985
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Application #:
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06542038
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Filing Dt:
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10/14/1983
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Title:
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TELEPHONE INDICATOR
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Patent #:
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Issue Dt:
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03/18/1986
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Application #:
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06547440
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Filing Dt:
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11/01/1983
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Title:
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TELEPHONE BRANCH EXCHANGE CABINET
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Patent #:
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Issue Dt:
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12/31/1985
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Application #:
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06575527
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Filing Dt:
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01/31/1984
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Title:
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BATTERY MAINTENANCE APPARATUS
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Patent #:
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Issue Dt:
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10/07/1986
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Application #:
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06577496
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Filing Dt:
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02/06/1984
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Title:
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PERIPHERAL CONTROL FOR A DIGITAL TELEPHONE SYSTEM
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Patent #:
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Issue Dt:
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09/30/1986
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Application #:
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06577500
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Filing Dt:
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02/06/1984
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Title:
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SWITCHING SYSTEM WITH SEPARATE SUPERVISORY LINKS
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Patent #:
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Issue Dt:
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04/07/1987
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Application #:
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06603531
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Filing Dt:
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04/25/1984
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Title:
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TELEPHONE
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Patent #:
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Issue Dt:
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08/04/1987
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Application #:
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06609443
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Filing Dt:
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05/11/1984
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Title:
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SWITCHING SYSTEM LOOPBACK TEST CIRCUIT
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Patent #:
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Issue Dt:
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08/05/1986
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Application #:
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06611515
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Filing Dt:
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05/17/1984
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Title:
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VOICE AND DATA INTERFACE CIRCUIT
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Patent #:
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Issue Dt:
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07/03/1990
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Application #:
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06655439
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Filing Dt:
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09/28/1984
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Title:
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METHOD OF DEFUSING PLURALITY OF DOPANTS SIMULTANEOUSLY FROM VAPOR PHASE INTO SEMICONDUCTOR SUBSTRATE
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Patent #:
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Issue Dt:
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01/19/1988
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Application #:
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06672878
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Filing Dt:
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11/19/1984
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Title:
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COMBINED VOICE AND DATA TERMINAL OR SIMILAR ARTICLE
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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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06678112
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Filing Dt:
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12/04/1984
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Title:
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TELEPHONE
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Patent #:
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Issue Dt:
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08/04/1987
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Application #:
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06691421
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Filing Dt:
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01/14/1985
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Title:
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INTERFACE CIRCUIT FOR REMOTE CONTROL OF A PABX
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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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06705679
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Filing Dt:
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02/26/1985
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Title:
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DIGITAL TONE DETECTOR
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Patent #:
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Issue Dt:
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02/02/1988
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Application #:
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06747705
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Filing Dt:
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06/24/1985
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Title:
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CONSTANT CURRENT LINE CIRCUIT
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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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06781020
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Filing Dt:
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09/27/1985
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Title:
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DIGITAL LOUDSPEAKING TELEPHONE
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Patent #:
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Issue Dt:
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07/21/1987
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Application #:
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06781023
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Filing Dt:
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09/27/1985
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Title:
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DYNAMIC MEMORY REFRESH AND PARITY CHECKING CIRCUIT
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Patent #:
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Issue Dt:
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03/24/1987
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Application #:
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06783554
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Filing Dt:
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10/03/1985
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Title:
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DECIMATING FILTER
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Patent #:
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Issue Dt:
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06/14/1988
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Application #:
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06783559
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Filing Dt:
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10/03/1985
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Title:
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SWITCHED CAPACITOR FINITE IMPULSE RESPONSE FILTER
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Patent #:
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Issue Dt:
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05/10/1988
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Application #:
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06785653
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Filing Dt:
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10/09/1985
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Title:
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LED DRIVER CIRCUIT
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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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06794695
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Filing Dt:
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11/04/1985
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Title:
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SELF-ADAPTIVE COMPUTER MEMORY ADDRESS ALLOCATION SYSTEM
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Patent #:
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Issue Dt:
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03/29/1988
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Application #:
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06794696
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Filing Dt:
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11/04/1985
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Title:
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TELEPHONE LINE STATUS CIRCUIT
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Patent #:
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Issue Dt:
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06/09/1987
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Application #:
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06799850
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Filing Dt:
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11/20/1985
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Title:
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TELEPHONE HANDSET DETECTOR
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Patent #:
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Issue Dt:
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02/23/1988
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Application #:
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06829907
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Filing Dt:
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02/18/1986
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Title:
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TELEPHONE SYSTEM
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Patent #:
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Issue Dt:
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10/20/1987
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Application #:
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06839521
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Filing Dt:
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03/14/1986
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Title:
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COMMUNICATION SYSTEM HAVING SEPARATE UNIDIRECTIONAL INFORMATION SIGNALLING
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Patent #:
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Issue Dt:
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12/20/1988
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Application #:
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06840394
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Filing Dt:
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03/17/1986
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Title:
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EXPANSION PORT FOR USE IN A COMMUNICATION SYSTEM
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Patent #:
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Issue Dt:
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02/16/1988
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Application #:
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06840395
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Filing Dt:
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03/17/1986
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Title:
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SYSTEM FOR INTERCONNECTING A PAIR OF COMMUNICATION SYSTEMS
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Patent #:
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Issue Dt:
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12/29/1987
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Application #:
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06844738
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Filing Dt:
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03/14/1986
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Title:
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TELEPHONE SET
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Patent #:
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Issue Dt:
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12/29/1987
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Application #:
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06845355
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Filing Dt:
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03/19/1986
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Title:
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TELEPHONE HANDSET
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Patent #:
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Issue Dt:
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11/15/1988
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Application #:
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06845356
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Filing Dt:
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03/19/1986
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Title:
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A BASE FOR A TELEPHONE SUBSCRIBER SET
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Patent #:
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Issue Dt:
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10/04/1988
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Application #:
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06865961
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Filing Dt:
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05/22/1986
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Title:
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SOLID STATE TRUNK CIRCUIT
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Patent #:
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Issue Dt:
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05/02/1989
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Application #:
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06870699
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Filing Dt:
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06/04/1986
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Title:
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TELEPHONE SET WITH DISPLAY
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Patent #:
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Issue Dt:
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12/13/1988
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Application #:
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06893950
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Filing Dt:
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08/06/1986
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Title:
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COMMUNICATIONS SWITCHING SYSTEM
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Patent #:
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Issue Dt:
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11/29/1988
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Application #:
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06903143
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Filing Dt:
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09/03/1986
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Title:
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PROGRAMMABLE SUBSCRIBER SET
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Patent #:
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Issue Dt:
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04/26/1988
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Application #:
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06907584
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Filing Dt:
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09/15/1986
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Title:
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DIGITAL COMPANDING CIRCUIT
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Patent #:
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Issue Dt:
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09/15/1987
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Application #:
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06921526
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Filing Dt:
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10/22/1986
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Title:
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DIGITAL TONE DETECTOR
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Patent #:
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Issue Dt:
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02/14/1989
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Application #:
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06928053
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Filing Dt:
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11/07/1986
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Title:
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SUBSCRIBER SET PROGRAMMING MODULE
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Patent #:
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Issue Dt:
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04/05/1988
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Application #:
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06928056
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Filing Dt:
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11/07/1986
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Title:
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EXPANSION SUBSYSTEM FOR USE IN A COMMUNICATION SYSTEM
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Patent #:
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Issue Dt:
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05/03/1988
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Application #:
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06931410
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Filing Dt:
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11/14/1986
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Title:
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CIRCUIT FOR SWITCHING BETWEEN BALANCED NETWORKS
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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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06931789
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Filing Dt:
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11/18/1986
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Title:
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CARTRIDGE FOR TELEPHONE SYSTEM EQUIPMENT CABINET
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Patent #:
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Issue Dt:
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08/02/1988
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Application #:
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06932405
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Filing Dt:
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11/12/2024
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Title:
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CMOS LATCH-UP RECOVERY CIRCUIT
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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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06936374
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Filing Dt:
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12/01/1986
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Title:
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COMMUNICATION SYSTEMS EQUIPMENT CABINET
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Patent #:
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Issue Dt:
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05/31/1988
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Application #:
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07035032
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Filing Dt:
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04/06/1987
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Title:
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CHEMICAL VAPOR DEPOSITION APPARATUS WITH MANIFOLD ENVELOPED BY COOLING MEANS
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Patent #:
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Issue Dt:
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02/07/1989
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Application #:
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07087049
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Filing Dt:
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08/19/1987
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Title:
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ANALOG PHASE LOCKED LOOP
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Patent #:
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Issue Dt:
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01/17/1989
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Application #:
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07108264
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Filing Dt:
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10/13/1987
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Title:
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FREQUENCY DOUBLER WITH DUTY CYCLE MONITOR MEANS
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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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07112147
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Filing Dt:
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10/26/1987
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Title:
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METHOD FOR DIFFUSING P-TYPE MATERIAL USING BORON DISKS
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Patent #:
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Issue Dt:
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06/27/1989
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Application #:
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07127700
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Filing Dt:
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12/02/1987
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Title:
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APPARATUS AND METHOD FOR SYNCHRONIZING A COMMUNICATION SYSTEM
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Patent #:
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Issue Dt:
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02/07/1989
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Application #:
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07127902
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Filing Dt:
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12/02/1987
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Title:
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DC CONTROL CIRCUIT
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Patent #:
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Issue Dt:
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08/29/1989
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Application #:
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07142816
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Filing Dt:
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01/11/1988
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Title:
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DIGITAL SIGNAL PROCESSING SYSTEM
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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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07152484
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Filing Dt:
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02/05/1988
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Title:
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GAS CYLINDER MONITOR AND CONTROL SYSTEM
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Patent #:
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Issue Dt:
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01/24/1989
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Application #:
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07157862
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Filing Dt:
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02/19/1988
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Title:
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COMPENSATION CIRCUIT FOR USE WITH AN INTEGRATING AMPLIFIER
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Patent #:
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Issue Dt:
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12/12/1989
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Application #:
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07158347
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Filing Dt:
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02/22/1988
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Title:
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TRUNK CIRCUIT WITH LOOP LENGTH GAIN EQUALIZATION
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Patent #:
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Issue Dt:
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12/11/1990
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Application #:
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07189180
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Filing Dt:
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05/02/1988
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Title:
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VOLTAGE MONITOR FOR IN-CIRCUIT TESTING
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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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07230078
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Filing Dt:
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08/09/1988
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Title:
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TELEPHONE TONE DETECTOR
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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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07284818
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Filing Dt:
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12/14/1988
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Title:
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PHOTOSENSITIVE DIODE ELEMENT AND ARRAY
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Patent #:
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Issue Dt:
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04/09/1991
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Application #:
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07304472
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Filing Dt:
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02/01/1989
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Title:
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COMMUNICATION SYSTEM SUPPORTING REMOTE OPERATIONS
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Patent #:
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Issue Dt:
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09/03/1991
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Application #:
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07313036
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Filing Dt:
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02/21/1989
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Title:
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DATA INTERFACE FOR TELEPHONE SYSTEM
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Patent #:
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Issue Dt:
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10/16/1990
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Application #:
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07323374
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Filing Dt:
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03/14/1989
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Title:
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PROGRAMMABLE THRESHOLD ALERT
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Patent #:
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Issue Dt:
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06/02/1992
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Application #:
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07346750
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Filing Dt:
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05/03/1989
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Title:
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DIGITAL DTMF TONE DETECTOR
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Patent #:
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Issue Dt:
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02/12/1991
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Application #:
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07348503
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Filing Dt:
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05/08/1989
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Title:
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LOW PROFILE INKER
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Patent #:
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Issue Dt:
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06/12/1990
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Application #:
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07348777
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Filing Dt:
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05/08/1989
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Title:
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AGC CIRCUIT
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Patent #:
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Issue Dt:
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06/04/1991
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Application #:
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07352544
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Filing Dt:
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05/16/1989
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Title:
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JITER-INVARIANT SWITCHED CAPACITOR PULSE SHAPER
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Patent #:
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Issue Dt:
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09/04/1990
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Application #:
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07374086
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Filing Dt:
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06/29/1989
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Title:
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BUS ARCHITECTURE FOR DIGITAL COMMUNICATIONS
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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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07386623
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Filing Dt:
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07/31/1989
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Title:
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OPTICAL SENSOR
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Patent #:
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Issue Dt:
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04/13/1993
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Application #:
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07386697
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Filing Dt:
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07/31/1989
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Title:
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DIGITAL KEY SYSTEM ARCHITECTURE
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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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07388942
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Filing Dt:
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08/03/1989
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Title:
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LINE CARD WITH DISTRIBUTED SIGNALING VOLTAGES
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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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07404010
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Filing Dt:
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09/07/1989
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Title:
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WIRELESS TELEPHONE SYSTEM
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Patent #:
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Issue Dt:
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07/23/1991
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Application #:
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07409966
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Filing Dt:
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09/18/1989
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Title:
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DATA STORAGE SYSTEM FOR TRANSFERRING LAST ENTERED INFORMATION FORM STATIC MEMORY TO MAGNETIC DISK UPON RECOVERING FROM DATA STORAGE INTERRUPTION
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Patent #:
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Issue Dt:
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10/01/1991
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Application #:
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07420648
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Filing Dt:
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10/11/1989
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Title:
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CIRCUIT FOR MAINTAINING HYBRID CANCELLATION OF SIGNALS IN A COMMUNICATION SYSTEM
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Patent #:
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Issue Dt:
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11/24/1992
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Application #:
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07426418
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Filing Dt:
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10/26/1989
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Title:
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GROUP EMERGENCY CALL SYSTEM
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Patent #:
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Issue Dt:
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06/08/1993
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Application #:
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07458295
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Filing Dt:
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12/28/1989
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Title:
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PROTECTION OF ANALOG REFERENCE AND BIAS VOLTAGE INPUTS
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Patent #:
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Issue Dt:
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12/10/1991
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Application #:
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07462134
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Filing Dt:
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01/08/1990
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Title:
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SERIAL DATA RATE DETECTION METHOD AND APPARATUS
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Patent #:
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Issue Dt:
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08/18/1992
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Application #:
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07494668
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Filing Dt:
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03/16/1990
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Title:
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TELEPHONE OR DATA SWITCHING SYSTEM WITH VARIABLE PROTOCOL INTER-OFFICE COMMUNICATION
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Patent #:
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Issue Dt:
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02/26/1991
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Application #:
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07498102
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Filing Dt:
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03/23/1990
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Title:
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APPARATUS FOR TESTING SPARE LINE CIRCUITS IN A COMMUNICATION SYSTEM
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Patent #:
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Issue Dt:
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06/15/1993
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Application #:
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07541050
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Filing Dt:
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06/20/1990
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Title:
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DATA TRANSFER BETWEEN HIGH BIT RATE BUSES VIA UNSHIELDED LOW BIT RATE BUS
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Patent #:
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Issue Dt:
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10/05/1993
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Application #:
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07703128
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Filing Dt:
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05/20/1991
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Title:
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TELEPHONE BASE
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Patent #:
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Issue Dt:
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08/31/1993
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Application #:
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07703129
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Filing Dt:
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05/20/1991
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Title:
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TELEPHONE HANDSET
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