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Hand-held musical game
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Patent number 7,044,857
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Issue date May 16, 2006
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Klitsner Industrial Design, LLC
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Daniel B. Klitsner
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A63 - SPORTS GAMES AMUSEMENTS
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Game apparatus
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Patent number D476377
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Issue date Jun 24, 2003
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Hasbro, Inc.
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Dan Klitsner
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D21 - Games, toys, and sports goods
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Mechanical interface device
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Patent number 6,322,449
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Issue date Nov 27, 2001
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Klitsner Industrial Design, LLC
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Dan Klitsner
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G06 - COMPUTING CALCULATING COUNTING