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Personal identification and signaling system

  • US 4,236,068 A
  • Filed: 03/29/1979
  • Issued: 11/25/1980
  • Est. Priority Date: 03/29/1979
  • Status: Expired due to Term
First Claim
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1. A portable identification system comprising, in combination:

  • a housing;

    a primary signal generator in said housing, for generating a primary frequency signal;

    means to generate a plurality of secondary signals from said primary signal;

    first switching means on said housing for transmitting said secondary signals in a predetermined sequence to generate an identification signal; and

    means energizeable to alter the sequence said secondary signals are transmitted thereby to change the characteristics of said identification signal.

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