TREA

Robert E. Grayson

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  • Great Falls, MT, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Credit card security system
    • Patent number 4,670,644
    • Issue date Jun 2, 1987
    • Robert E. Grayson
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Locking capsule
    • Patent number 4,487,327
    • Issue date Dec 11, 1984
    • Robert E. Grayson
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE