TREA

Robert M. Del Principe

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  • Hawthorne, CA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Electronic football game
    • Patent number 4,422,639
    • Issue date Dec 27, 1983
    • Mattel, Inc.
    • Robert M. Del Principe
    • A63 - SPORTS GAMES AMUSEMENTS
  • Information Patent Grant

    Electronic game using phototransducer
    • Patent number 4,403,777
    • Issue date Sep 13, 1983
    • Mattel, Inc.
    • Robert M. Del Principe
    • A63 - SPORTS GAMES AMUSEMENTS
  • Information Patent Grant

    Electronic baseball game
    • Patent number 4,372,557
    • Issue date Feb 8, 1983
    • Mattel, Inc.
    • Robert M. Del Principe
    • A63 - SPORTS GAMES AMUSEMENTS
  • Information Patent Grant

    Electronic card game simulator
    • Patent number 4,314,336
    • Issue date Feb 2, 1982
    • Mattel, Inc.
    • William L. Bernstein
    • A63 - SPORTS GAMES AMUSEMENTS