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Bolus with animal ID and temperature transponder

  • US 6,012,415 A
  • Filed: 04/18/1997
  • Issued: 01/11/2000
  • Est. Priority Date: 04/18/1997
  • Status: Expired due to Fees
First Claim
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1. A bolus for oral administration to a ruminant animal and for retention in the rumen or reticulum of that animal comprising:

  • a permanent magnet;

    a transponder chip;

    at least one read only memory containing identification information of said animal carried by said transponder chip;

    an antenna connected to said transponder chip for transmitting at least said identification contained on said at least one memory when said transponder chip is excited, said antenna comprising a plurality of wire windings around said magnet; and

    a reader for exciting said transponder chip and reading at least said identification on said at least one memory;

    said transponder chip, at least one read only memory and antenna all being fixedly attached to said magnet.

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