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Position monitoring displays
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Patent number 7,658,695
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Issue date Feb 9, 2010
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Performance Health Technologies, Inc.
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Burl W. Amsbury
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A63 - SPORTS GAMES AMUSEMENTS
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Position monitoring system
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Patent number 7,625,316
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Issue date Dec 1, 2009
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Performance Health Technologies, Inc.
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Burl W. Amsbury
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A63 - SPORTS GAMES AMUSEMENTS
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Position monitoring device
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Patent number 7,503,878
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Issue date Mar 17, 2009
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Performance Health Technologies, Inc.
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Burl W. Amsbury
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE