John P. Matthews

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Madison, WI, US

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus and method for recording the impact location between a go...
- Patent number 7,086,956
- Issue date Aug 8, 2006
- John P. Matthews
- A63 - SPORTS GAMES AMUSEMENTS

Patents Applicationslast 30 patents

Information Patent Application
Apparatus and method for recording the impact location between a go...
- Publication number 20050233820
- Publication date Oct 20, 2005
- John P. Matthews
- A63 - SPORTS GAMES AMUSEMENTS
Information Patent Application
Apparatus and method for recording the impact location between a go...
- Publication number 20040110571
- Publication date Jun 10, 2004
- John P. Matthews
- A63 - SPORTS GAMES AMUSEMENTS