TREA

using pilot wire

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  • CPC
  • H04B3/11
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Parent Industries

HELECTRICITY H04Electric communication H04BTRANSMISSION H04B3/00Line transmission systems

Current Industry

H04B3/11using pilot wire
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    3407353
    • Patent number 3,407,353
    • Issue date Oct 22, 1968
    • G01 - MEASURING TESTING
  • Information Patent Grant

    3387232
    • Patent number 3,387,232
    • Issue date Jun 4, 1968
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2567824
    • Patent number 2,567,824
    • Issue date Sep 11, 1951
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2280950
    • Patent number 2,280,950
    • Issue date Apr 28, 1942
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2225653
    • Patent number 2,225,653
    • Issue date Dec 24, 1940
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2151821
    • Patent number 2,151,821
    • Issue date Mar 28, 1939
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2144865
    • Patent number 2,144,865
    • Issue date Jan 24, 1939
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2139236
    • Patent number 2,139,236
    • Issue date Dec 6, 1938
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2135566
    • Patent number 2,135,566
    • Issue date Nov 8, 1938
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2130517
    • Patent number 2,130,517
    • Issue date Sep 20, 1938
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2116600
    • Patent number 2,116,600
    • Issue date May 10, 1938
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2105927
    • Patent number 2,105,927
    • Issue date Jan 18, 1938
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2098968
    • Patent number 2,098,968
    • Issue date Nov 16, 1937
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2086106
    • Patent number 2,086,106
    • Issue date Jul 6, 1937
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2086105
    • Patent number 2,086,105
    • Issue date Jul 6, 1937
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2066539
    • Patent number 2,066,539
    • Issue date Jan 5, 1937
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2030400
    • Patent number 2,030,400
    • Issue date Feb 11, 1936
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2017654
    • Patent number 2,017,654
    • Issue date Oct 15, 1935
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    1960350
    • Patent number 1,960,350
    • Issue date May 29, 1934
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    1956547
    • Patent number 1,956,547
    • Issue date May 1, 1934
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    1953152
    • Patent number 1,953,152
    • Issue date Apr 3, 1934
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    1952524
    • Patent number 1,952,524
    • Issue date Mar 27, 1934
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    1931598
    • Patent number 1,931,598
    • Issue date Oct 24, 1933
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    1917016
    • Patent number 1,917,016
    • Issue date Jul 4, 1933
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    1917035
    • Patent number 1,917,035
    • Issue date Jul 4, 1933
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    1871959
    • Patent number 1,871,959
    • Issue date Aug 16, 1932
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    1849141
    • Patent number 1,849,141
    • Issue date Mar 15, 1932
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    1661263
    • Patent number 1,661,263
    • Issue date Mar 6, 1928
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    1661264
    • Patent number 1,661,264
    • Issue date Mar 6, 1928
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    1647383
    • Patent number 1,647,383
    • Issue date Nov 1, 1927
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents