TREA

Frank J. Hart

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  • Santa Clara, CA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Interactive surveillance device
    • Patent number 5,473,368
    • Issue date Dec 5, 1995
    • Frank J. Hart
    • G08 - SIGNALLING
  • Information Patent Grant

    Interactive tracking device
    • Patent number 5,299,971
    • Issue date Apr 5, 1994
    • Frank J. Hart
    • G08 - SIGNALLING
  • Information Patent Grant

    Interactive toy
    • Patent number 5,083,968
    • Issue date Jan 28, 1992
    • Frank J. Hart
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    Passive infrared display devices
    • Patent number 4,930,236
    • Issue date Jun 5, 1990
    • Frank J. Hart
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS