TREA

Kris K. Krogh

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  • Santa Barbara, CA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Educational random problem selector
    • Patent number 4,568,086
    • Issue date Feb 4, 1986
    • Kris K. Krogh
    • A63 - SPORTS GAMES AMUSEMENTS
  • Information Patent Grant

    Spinner device
    • Patent number 4,508,344
    • Issue date Apr 2, 1985
    • Kris K. Krogh
    • A63 - SPORTS GAMES AMUSEMENTS