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Personal security apparatus

  • US 5,196,825 A
  • Filed: 12/16/1991
  • Issued: 03/23/1993
  • Est. Priority Date: 12/16/1991
  • Status: Expired due to Fees
First Claim
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1. An apparatus comprised of first and second devices mountable at respective first and second locations on a person'"'"'s body, said first device including a first transmitter for normally transmitting a first electromagnetic signal, said first transmitter being responsive to a first predetermined condition for transmitting a second electromagnetic signal in lieu of said first signal, said second device including a receiver for receiving said first and second signals and a second transmitter for transmitting a third electromagnetic signal in response to a second predetermined condition, said second predetermined condition being indicated by either said second signal being received by said receiver or said first signal not being received by said receiver, at least said second and third signals being detectable by a remote receiver.

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