TREA

for phantom working

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Industry

  • CPC
  • H04M7/08
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Parent Industries

HELECTRICITY H04Electric communication H04MTELEPHONIC COMMUNICATION H04M7/00Interconnection arrangements between switching centres

Current Industry

H04M7/08for phantom working
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Integrated home location register and IP-SS7 gateway
    • Patent number 6,594,258
    • Issue date Jul 15, 2003
    • Ericsson Inc.
    • Dave Larson
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Apparatus utilizing a phantom circuit for connecting additional sub...
    • Patent number 3,975,594
    • Issue date Aug 17, 1976
    • Siemens Aktiengesellschaft
    • Siegfried Guntersdorfer
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3614329
    • Patent number 3,614,329
    • Issue date Oct 19, 1971
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3213200
    • Patent number 3,213,200
    • Issue date Oct 19, 1965
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2829205
    • Patent number 2,829,205
    • Issue date Apr 1, 1958
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2709721
    • Patent number 2,709,721
    • Issue date May 31, 1955
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2629020
    • Patent number 2,629,020
    • Issue date Feb 17, 1953
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2629021
    • Patent number 2,629,021
    • Issue date Feb 17, 1953
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2623937
    • Patent number 2,623,937
    • Issue date Dec 30, 1952
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2560266
    • Patent number 2,560,266
    • Issue date Jul 10, 1951
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2495682
    • Patent number 2,495,682
    • Issue date Jan 31, 1950
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2434698
    • Patent number 2,434,698
    • Issue date Jan 20, 1948
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2434697
    • Patent number 2,434,697
    • Issue date Jan 20, 1948
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2387018
    • Patent number 2,387,018
    • Issue date Oct 16, 1945
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2376275
    • Patent number 2,376,275
    • Issue date May 15, 1945
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2352918
    • Patent number 2,352,918
    • Issue date Jul 4, 1944
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2347505
    • Patent number 2,347,505
    • Issue date Apr 25, 1944
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2343516
    • Patent number 2,343,516
    • Issue date Mar 7, 1944
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2282464
    • Patent number 2,282,464
    • Issue date May 12, 1942
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2282437
    • Patent number 2,282,437
    • Issue date May 12, 1942
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2282434
    • Patent number 2,282,434
    • Issue date May 12, 1942
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2174371
    • Patent number 2,174,371
    • Issue date Sep 26, 1939
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2105016
    • Patent number 2,105,016
    • Issue date Jan 11, 1938
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    1801182
    • Patent number 1,801,182
    • Issue date Apr 14, 1931
    • G01 - MEASURING TESTING
  • Information Patent Grant

    1681216
    • Patent number 1,681,216
    • Issue date Aug 21, 1928
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    1663730
    • Patent number 1,663,730
    • Issue date Mar 27, 1928
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    1654912
    • Patent number 1,654,912
    • Issue date Jan 3, 1928
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    1578269
    • Patent number 1,578,269
    • Issue date Mar 30, 1926
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    1572756
    • Patent number 1,572,756
    • Issue date Feb 9, 1926
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    1565131
    • Patent number 1,565,131
    • Issue date Dec 8, 1925
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE