Robert B. Coupar

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Victoria, British Columbia, CA

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Patents Grantslast 30 patents

Information Patent Grant
Modified one-span stringing racquet and method of stringing
- Patent number 4,750,742
- Issue date Jun 14, 1988
- Robert B. Coupar
- A63 - SPORTS GAMES AMUSEMENTS
Information Patent Grant
Tennis racquet
- Patent number 4,140,316
- Issue date Feb 20, 1979
- Robert B. Coupar
- A63 - SPORTS GAMES AMUSEMENTS