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Arrangements for signalling the number or class of the calling line to the operator

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  • CPC
  • H04M3/64
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Parent Industries

HELECTRICITY H04Electric communication H04MTELEPHONIC COMMUNICATION H04M3/00Automatic or semi-automatic exchanges

Current Industry

H04M3/64Arrangements for signalling the number or class of the calling line to the operator
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Patents Grantslast 30 patents

  • Information Patent Grant

    System and method for monitoring incoming communications to a telec...
    • Patent number 7,995,726
    • Issue date Aug 9, 2011
    • AT&T Intellectual Property I, L.P.
    • James C. Bedingfield
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    System and method for monitoring incoming communications to a telec...
    • Patent number 7,203,293
    • Issue date Apr 10, 2007
    • BellSouth Intellectual Property Corp.
    • James C. Bedingfield
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    System and method for monitoring incoming communications to a telec...
    • Patent number 6,665,388
    • Issue date Dec 16, 2003
    • BellSouth Intellectual Property Corporation
    • James C. Bedingfield
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Remote telecommunications system for automatic number identificatio...
    • Patent number 6,453,037
    • Issue date Sep 17, 2002
    • MCI Communications Corporation
    • William G. Welter
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Automatic redial in a key telephone system having different line types
    • Patent number 5,153,908
    • Issue date Oct 6, 1992
    • Canon Kabushiki Kaisha
    • Katsuhiro Kakizawa
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Converter for in-band routing and/or origination information
    • Patent number 5,046,088
    • Issue date Sep 3, 1991
    • Dialogic Corporation
    • Edwin K. Margulies
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Class of line identifier apparatus and method therefor
    • Patent number 4,086,439
    • Issue date Apr 25, 1978
    • Sandra Rae Vowles
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Telephone patching apparatus
    • Patent number 4,072,827
    • Issue date Feb 7, 1978
    • Robert C. Oman
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Telephone system and method for providing directory assistance/inte...
    • Patent number 4,053,949
    • Issue date Oct 11, 1977
    • Frank A. Recca
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    System for monitoring dialled telephone numbers
    • Patent number 4,013,839
    • Issue date Mar 22, 1977
    • Telstop S.A.
    • Arthur Stewart Bell
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3890473
    • Patent number 3,890,473
    • Issue date Jun 17, 1975
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3836728
    • Patent number 3,836,728
    • Issue date Sep 17, 1974
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3737898
    • Patent number 3,737,898
    • Issue date Jun 5, 1973
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3536839
    • Patent number 3,536,839
    • Issue date Oct 27, 1970
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3397288
    • Patent number 3,397,288
    • Issue date Aug 13, 1968
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3387094
    • Patent number 3,387,094
    • Issue date Jun 4, 1968
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3246318
    • Patent number 3,246,318
    • Issue date Apr 12, 1966
    • G08 - SIGNALLING
  • Information Patent Grant

    3158694
    • Patent number 3,158,694
    • Issue date Nov 24, 1964
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3142054
    • Patent number 3,142,054
    • Issue date Jul 21, 1964
    • G08 - SIGNALLING
  • Information Patent Grant

    3141068
    • Patent number 3,141,068
    • Issue date Jul 14, 1964
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3140431
    • Patent number 3,140,431
    • Issue date Jul 7, 1964
    • G08 - SIGNALLING
  • Information Patent Grant

    3089131
    • Patent number 3,089,131
    • Issue date May 7, 1963
    • G08 - SIGNALLING
  • Information Patent Grant

    3028452
    • Patent number 3,028,452
    • Issue date Apr 3, 1962
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2885478
    • Patent number 2,885,478
    • Issue date May 5, 1959
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2827625
    • Patent number 2,827,625
    • Issue date Mar 18, 1958
    • G08 - SIGNALLING
  • Information Patent Grant

    2797407
    • Patent number 2,797,407
    • Issue date Jun 25, 1957
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2787689
    • Patent number 2,787,689
    • Issue date Apr 2, 1957
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2764634
    • Patent number 2,764,634
    • Issue date Sep 25, 1956
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    2732434
    • Patent number 2,732,434
    • Issue date Jan 24, 1956
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2719250
    • Patent number 2,719,250
    • Issue date Sep 27, 1955
    • G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents