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Vehicle alarm

  • US 3,995,268 A
  • Filed: 10/24/1974
  • Issued: 11/30/1976
  • Est. Priority Date: 10/24/1974
  • Status: Expired due to Term
First Claim
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1. A vehicle warning alarm circuit producing an audible signal from a buzzer in response to an electrical signal indicating the occurrence of a selected condition, comprising:

  • a. means for generating a selected audio signal when enabled and energized;

    b. means for generating a low frequency signal, said low frequency signal enabling said audio signal generating means to produce an interrupted audio signal;

    c. means for energizing both of said generating means;

    d. means for applying said interrupted audio signal to said buzzer to produce said audible signal; and

    e. means for deenergizing both of said generating means after a selected period of operation.

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