TREA

wherein the setting-operation short-circuits or open-circuits the transmitting mechanism during a variable part of a cycle

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Industry

  • CPC
  • H04M1/40
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Parent Industries

HELECTRICITY H04Electric communication H04MTELEPHONIC COMMUNICATION H04M1/00Substation equipment

Current Industry

H04M1/40wherein the setting-operation short-circuits or open-circuits the transmitting mechanism during a variable part of a cycle
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    2424423
    • Patent number 2,424,423
    • Issue date Jul 22, 1947
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    1369022
    • Patent number 1,369,022
    • Issue date Feb 22, 1921
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents