William H. Clark

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Trotwood, OH, US

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Patents Grantslast 30 patents

Information Patent Grant
Board game device
- Patent number 5,687,970
- Issue date Nov 18, 1997
- William H. Clark
- A63 - SPORTS GAMES AMUSEMENTS
Information Patent Grant
Numerically-scored chess-like board game
- Patent number 5,683,089
- Issue date Nov 4, 1997
- William H. Clark
- A63 - SPORTS GAMES AMUSEMENTS