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Automatic telephone guest call system

  • US 3,393,272 A
  • Filed: 11/19/1965
  • Issued: 07/16/1968
  • Est. Priority Date: 11/19/1965
  • Status: Expired due to Term
First Claim
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1. A GUEST CALL SYSTEM INCLUDING, IN COMBINATION, MANUALLY SETTABLE, SWITCHING MATRIX MEANS HAVING PLURAL OUTPUT CIRCUITS CORRESPONDING TO TELEPHONE STATIONS TO BE SERVICED AND PLURAL INPUT CIRCUITS CORRESPONDING TO SELECTABLE TIMES FOR GUEST-CALL ACTIVATING THE SAID TELEPHONE STATIONS;

  • TELEPHONE-RINGING SIGNAL-SOURCE MEANS AND FOR SUPPLYING A SIGNAL TO SAID TELEPHONE STATIONS;

    MEANS COUPLED TO AND BETWEEN SAID SIGNAL-SOURCE MEANS AND SAID PLURAL INPUT CIRCUITS OF SAID SWITCHING MATRIX FOR SEQUENTIALLY SUPPLYING SAID INPUT CIRCUITS, IN SEQUENCE, SAID SIGNAL AT RESPECTIVE PRE-DETERMINED TIMES, SAID SWITCHING MATRIX INCLUDING MANUALLY ACTUATABLE SWITCH MEANS FOR SELECTIVELY COUPLING A CHOSEN ONE OF SAID INPUT CIRCUITS WITH A SELECTED MEMBER OF SAID OUTPUT CIRCUITS;

    A MESSAGE GENERATING UNIT;

    AND MEANS FOR AUTOMATICALLY COUPLING SAID MESSAGE GENERATING UNIT TO SELECTED ONES OF SAID TELEPHONE STATIONS WHEN SAID STATIONS ARE ANSWERED, AND FOR AUTOMATICALLY DISCONNECTING SAID SIGNAL-GENERATING MEANS THEREFROM.

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