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  • CPC
  • H04L13/14
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Patents Grantslast 30 patents

  • Information Patent Grant

    3012228

    • Patent number 3,012,228
    • Issue date Dec 5, 1961
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2998486

    • Patent number 2,998,486
    • Issue date Aug 29, 1961
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2898403

    • Patent number 2,898,403
    • Issue date Aug 4, 1959
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    2883455

    • Patent number 2,883,455
    • Issue date Apr 21, 1959
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2876365

    • Patent number 2,876,365
    • Issue date Mar 3, 1959
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    2687451

    • Patent number 2,687,451
    • Issue date Aug 24, 1954
    • A24 - TOBACCO CIGARS CIGARETTES SMOKERS' REQUISITES
  • Information Patent Grant

    2612562

    • Patent number 2,612,562
    • Issue date Sep 30, 1952
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2612563

    • Patent number 2,612,563
    • Issue date Sep 30, 1952
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2543874

    • Patent number 2,543,874
    • Issue date Mar 6, 1951
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2536917

    • Patent number 2,536,917
    • Issue date Jan 2, 1951
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    2484084

    • Patent number 2,484,084
    • Issue date Oct 11, 1949
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2456825

    • Patent number 2,456,825
    • Issue date Dec 21, 1948
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2412642

    • Patent number 2,412,642
    • Issue date Dec 17, 1946
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2411441

    • Patent number 2,411,441
    • Issue date Nov 19, 1946
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2375044

    • Patent number 2,375,044
    • Issue date May 1, 1945
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2361766

    • Patent number 2,361,766
    • Issue date Oct 31, 1944
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2356514

    • Patent number 2,356,514
    • Issue date Aug 22, 1944
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2339682

    • Patent number 2,339,682
    • Issue date Jan 18, 1944
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2275974

    • Patent number 2,275,974
    • Issue date Mar 10, 1942
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2230679

    • Patent number 2,230,679
    • Issue date Feb 4, 1941
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2210574

    • Patent number 2,210,574
    • Issue date Aug 6, 1940
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2210575

    • Patent number 2,210,575
    • Issue date Aug 6, 1940
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2210577

    • Patent number 2,210,577
    • Issue date Aug 6, 1940
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2210576

    • Patent number 2,210,576
    • Issue date Aug 6, 1940
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2209395

    • Patent number 2,209,395
    • Issue date Jul 30, 1940
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2195853

    • Patent number 2,195,853
    • Issue date Apr 2, 1940
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2195855

    • Patent number 2,195,855
    • Issue date Apr 2, 1940
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2195857

    • Patent number 2,195,857
    • Issue date Apr 2, 1940
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2153178

    • Patent number 2,153,178
    • Issue date Apr 4, 1939
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2110548

    • Patent number 2,110,548
    • Issue date Mar 8, 1938
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents