TREA

using tuning forks or vibrating reeds

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Industry

  • CPC
  • H04L25/205
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Parent Industries

HELECTRICITY H04Electric communication H04LTRANSMISSION OF DIGITAL INFORMATION H04L25/00Baseband systems

Current Industry

H04L25/205using tuning forks or vibrating reeds
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    2737546
    • Patent number 2,737,546
    • Issue date Mar 6, 1956
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2546369
    • Patent number 2,546,369
    • Issue date Mar 27, 1951
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2468065
    • Patent number 2,468,065
    • Issue date Apr 26, 1949
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    2433362
    • Patent number 2,433,362
    • Issue date Dec 30, 1947
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    2387616
    • Patent number 2,387,616
    • Issue date Oct 23, 1945
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2376248
    • Patent number 2,376,248
    • Issue date May 15, 1945
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2224078
    • Patent number 2,224,078
    • Issue date Dec 3, 1940
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2154608
    • Patent number 2,154,608
    • Issue date Apr 18, 1939
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2154624
    • Patent number 2,154,624
    • Issue date Apr 18, 1939
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2154623
    • Patent number 2,154,623
    • Issue date Apr 18, 1939
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2133456
    • Patent number 2,133,456
    • Issue date Oct 18, 1938
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2107753
    • Patent number 2,107,753
    • Issue date Feb 8, 1938
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2107149
    • Patent number 2,107,149
    • Issue date Feb 1, 1938
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2090944
    • Patent number 2,090,944
    • Issue date Aug 24, 1937
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    1771445
    • Patent number 1,771,445
    • Issue date Jul 29, 1930
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    1771446
    • Patent number 1,771,446
    • Issue date Jul 29, 1930
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    1579427
    • Patent number 1,579,427
    • Issue date Apr 6, 1926
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    1545602
    • Patent number 1,545,602
    • Issue date Jul 14, 1925
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE