TREA

the same frequency being used for all signalling information

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  • CPC
  • H04Q1/4465
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Parent Industries

HELECTRICITY H04Electric communication H04QSELECTING H04Q1/00Details of selecting apparatus or arrangements for establishing connections among stations for the purpose of transferring information via these connections

Current Industry

H04Q1/4465the same frequency being used for all signalling information
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Patents Grantslast 30 patents

  • Information Patent Grant

    3873772
    • Patent number 3,873,772
    • Issue date Mar 25, 1975
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Grant

    3824345
    • Patent number 3,824,345
    • Issue date Jul 16, 1974
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3818146
    • Patent number 3,818,146
    • Issue date Jun 18, 1974
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3763324
    • Patent number 3,763,324
    • Issue date Oct 2, 1973
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3747009
    • Patent number 3,747,009
    • Issue date Jul 17, 1973
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3732378
    • Patent number 3,732,378
    • Issue date May 8, 1973
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3671939
    • Patent number 3,671,939
    • Issue date Jun 20, 1972
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3637943
    • Patent number 3,637,943
    • Issue date Jan 25, 1972
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3638038
    • Patent number 3,638,038
    • Issue date Jan 25, 1972
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3557319
    • Patent number 3,557,319
    • Issue date Jan 19, 1971
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3544723
    • Patent number 3,544,723
    • Issue date Dec 1, 1970
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3522544
    • Patent number 3,522,544
    • Issue date Aug 4, 1970
    • G08 - SIGNALLING
  • Information Patent Grant

    3484558
    • Patent number 3,484,558
    • Issue date Dec 16, 1969
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3306984
    • Patent number 3,306,984
    • Issue date Feb 28, 1967
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3229041
    • Patent number 3,229,041
    • Issue date Jan 11, 1966
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3187109
    • Patent number 3,187,109
    • Issue date Jun 1, 1965
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3173065
    • Patent number 3,173,065
    • Issue date Mar 9, 1965
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3164680
    • Patent number 3,164,680
    • Issue date Jan 5, 1965
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3156775
    • Patent number 3,156,775
    • Issue date Nov 10, 1964
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3140358
    • Patent number 3,140,358
    • Issue date Jul 7, 1964
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3133158
    • Patent number 3,133,158
    • Issue date May 12, 1964
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3098179
    • Patent number 3,098,179
    • Issue date Jul 16, 1963
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3075129
    • Patent number 3,075,129
    • Issue date Jan 22, 1963
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3059060
    • Patent number 3,059,060
    • Issue date Oct 16, 1962
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3048660
    • Patent number 3,048,660
    • Issue date Aug 7, 1962
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2883473
    • Patent number 2,883,473
    • Issue date Apr 21, 1959
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2883474
    • Patent number 2,883,474
    • Issue date Apr 21, 1959
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2864079
    • Patent number 2,864,079
    • Issue date Dec 9, 1958
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2837604
    • Patent number 2,837,604
    • Issue date Jun 3, 1958
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2830128
    • Patent number 2,830,128
    • Issue date Apr 8, 1958
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents