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Method and apparatus for generating and detecting acoustic signals

  • US 5,854,589 A
  • Filed: 10/22/1997
  • Issued: 12/29/1998
  • Est. Priority Date: 10/23/1996
  • Status: Expired due to Fees
First Claim
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1. A tag comprising:

  • a base having first and second opposing surfaces;

    a side wall having a first surface coupled to the first surface of the base; and

    a resonator having a first end coupled to a second surface of said side wall.

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