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Arrangements wherein a dial or equivalent generates identifying signals

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  • CPC
  • H04M1/54
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Parent Industries

HELECTRICITY H04Electric communication H04MTELEPHONIC COMMUNICATION H04M1/00Substation equipment

Current Industry

H04M1/54Arrangements wherein a dial or equivalent generates identifying signals
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    3864746
    • Patent number 3,864,746
    • Issue date Feb 4, 1975
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3140353
    • Patent number 3,140,353
    • Issue date Jul 7, 1964
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3098899
    • Patent number 3,098,899
    • Issue date Jul 23, 1963
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3003042
    • Patent number 3,003,042
    • Issue date Oct 3, 1961
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2976366
    • Patent number 2,976,366
    • Issue date Mar 21, 1961
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2890287
    • Patent number 2,890,287
    • Issue date Jun 9, 1959
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2846512
    • Patent number 2,846,512
    • Issue date Aug 5, 1958
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2824176
    • Patent number 2,824,176
    • Issue date Feb 18, 1958
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2822424
    • Patent number 2,822,424
    • Issue date Feb 4, 1958
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2691070
    • Patent number 2,691,070
    • Issue date Oct 5, 1954
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2691071
    • Patent number 2,691,071
    • Issue date Oct 5, 1954
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2581689
    • Patent number 2,581,689
    • Issue date Jan 8, 1952
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2581697
    • Patent number 2,581,697
    • Issue date Jan 8, 1952
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2463717
    • Patent number 2,463,717
    • Issue date Mar 8, 1949
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2366647
    • Patent number 2,366,647
    • Issue date Jan 2, 1945
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2254378
    • Patent number 2,254,378
    • Issue date Sep 2, 1941
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2043674
    • Patent number 2,043,674
    • Issue date Jun 9, 1936
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents