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Telephone switchboard patching unit

  • US 3,096,404 A
  • Filed: 08/24/1961
  • Issued: 07/02/1963
  • Est. Priority Date: 08/24/1961
  • Status: Expired due to Term
First Claim
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1. A SWITCHBOARD PATCHING UNIT FOR CONNECTING AND SUPERVISING A TELEPHONE CALL BETWEEN AN INCOMING CALL PLUG AND AN OUTGOING CALL JACK ON SAID SWITCHBOARD COMPRISING, IN COMBINATION:

  • A HOUSING CIRCUIT MEANS IN SAID HOUSING FOR RECEIVING AND CONNECTING SAID INCOMING CALL PLUG WITH SAID OUTGOING CALL JACK;

    A SIGNAL MEANS MEANS IN SAID CIRCUIT MEANS CONNECTED TO SAID SIGNAL MEANS TO ENERGIZE SAID SIGNAL MEANS IN RESPONSE TO A CHANGE OF VOLTAGE ACROSS THE TERMINALS OF SAID OUTGOING CALL JACK UPON COMPLETION OF SAID TELEPHONE CALL, SAID HOUSING FURTHER INCLUDING MEANS FOR RECEIVING A DIALING OUT PLUG FROM SAID SWITCHBOARD, SAID CIRCUIT MEANS CONNECTING SAID DIALING OUT PLUG WITH SAID OUTGOING CALL JACK PRIOR TO INSERTION OF SAID INCOMING CALL PLUG IN SAID HOUSING AND BEING RESPONSIVE TO SAID INSERTION OF SAID INCOMING CALL PLUG IN SAID HOUSING TO DISCONNECT SAID DIALING OUT PLUG.

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