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Call transmitting devices

  • US 3,129,294 A
  • Filed: 02/26/1958
  • Issued: 04/14/1964
  • Est. Priority Date: 02/26/1958
  • Status: Expired due to Term
First Claim
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3. WITH AN AUTOMATIC TELEPHONING DEVICE HAVING MECHANISMS FOR PRODUCING ELECTRICAL IMPULSES AND A PLURALITY OF ADJUSTABLE LEVERS BEING SIMULTANEOUSLY SET AND SEQUENTIALLY RELEASED TO ACTUATE AN IMPULSE SWITCH THROUGH A COMMON CAM SHAFT, AN ADJUSTABLE IMPULSE CONTROL MEMBER BEING USED FOR ADJUSTING THE SET OF THE LEVERS, SAID ADJUSTABLE IMPULSE CONTROL MEMBER COMPRISING, IN COMBINATION, A FILE CARD HAVING A PLURALITY OF IDENTICAL SLOTS OPENING INTO ONE EDGE;

  • A PLURALITY OF SEPARATE BAR MEMBERS OF VARIOUS LENGTHS;

    AND MEANS FOR TEMPORARY ATTACHMENT OF THE BARS TO THE CARD IN A MANNER WHICH SHORTENS THE SLOTS TO VARIOUS LENGTHS ACCORDING TO THE LENGTH OF THE BARS.

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