TREA

James J. Hartmann

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  • Indianapolis, IN, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Telephone station having a touch-screen display
    • Patent number D323657
    • Issue date Feb 4, 1992
    • AT&T Bell Laboratories
    • David C. Danielson
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Telephone dialer adjunct
    • Patent number D304587
    • Issue date Nov 14, 1989
    • American Telephone and Telegraph Company
    • David C. Danielson
    • D14 - Recording, communication, or information retrieval equipment