TREA

Martin J. Nagel

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  • Northfield Center, OH, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Aural-visual product display
    • Patent number 4,142,216
    • Issue date Feb 27, 1979
    • Tenna Corporation
    • Stanley B. Goss
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    Aural-visual product display
    • Patent number 3,983,550
    • Issue date Sep 28, 1976
    • Tenna Corporation
    • Stanley B. Goss
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS