Donald R. Matthews

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Provo, UT, US

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Patents Grantslast 30 patents

Information Patent Grant
Short ski climber
- Patent number 5,052,708
- Issue date Oct 1, 1991
- Donald R. Matthews
- A63 - SPORTS GAMES AMUSEMENTS
Information Patent Grant
Ski climber
- Patent number 4,666,178
- Issue date May 19, 1987
- Donald R. Matthews
- A63 - SPORTS GAMES AMUSEMENTS