James J. Joyce

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Colorado Springs, CO, US

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Patents Grantslast 30 patents

Information Patent Grant
Volleyball out of bounds detecting and indicating system
- Patent number 4,422,647
- Issue date Dec 27, 1983
- Wayne D. Wilson
- A63 - SPORTS GAMES AMUSEMENTS
Information Patent Grant
Volleyball net touch detecting and indicating system
- Patent number 4,398,724
- Issue date Aug 16, 1983
- Wayne D. Wilson
- A63 - SPORTS GAMES AMUSEMENTS