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Oswald G. Addison Jr.

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  • Lanham, MD, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Timing device for skiers
    • Patent number 4,930,810
    • Issue date Jun 5, 1990
    • Oswald G. Addison
    • A63 - SPORTS GAMES AMUSEMENTS
  • Information Patent Grant

    Timing device for skiers
    • Patent number 4,762,340
    • Issue date Aug 9, 1988
    • Oswald G. Addison
    • A63 - SPORTS GAMES AMUSEMENTS