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Electronically controlled multi-tone peripheral

  • US 20020135491A1
  • Filed: 03/22/2001
  • Published: 09/26/2002
  • Est. Priority Date: 03/22/2001
  • Status: Abandoned Application
First Claim
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1. An audible alarm for use in an alarm system, the audible alarm producing a plurality of distinct audible alarm signals in response to a control signal.

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