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Donald P. Carney
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Oyster Bay, NY, US
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last 30 patents
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Patent Grant
Racket string tension tester
Patent number
4,876,900
Issue date
Oct 31, 1989
William P. Carney
A63 - SPORTS GAMES AMUSEMENTS
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Patent Grant
Tennis racket string tension tester
Patent number
4,794,805
Issue date
Jan 3, 1989
William P. Carney
A63 - SPORTS GAMES AMUSEMENTS