TREA

Indicating or preventing prior or unauthorized use

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Industry

  • CPC
  • G11B23/28
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Parent Industries

GPHYSICS G11Information storage G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER G11B23/00Record carriers not specific to the method of recording or reproducing Accessories

Current Industry

G11B23/28Indicating or preventing prior or unauthorized use
Industries