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Thermochromic golf ball
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Patent number 7,226,961
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Issue date Jun 5, 2007
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Fantom Company, Ltd.
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Yang Hwan Park
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A63 - SPORTS GAMES AMUSEMENTS
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Photochromic golf ball
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Patent number 7,214,145
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Issue date May 8, 2007
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Fantom Company, Ltd.
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Yang Hwan Park
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A63 - SPORTS GAMES AMUSEMENTS
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Photoluminescent golf ball
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Patent number 7,179,856
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Issue date Feb 20, 2007
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Fantom Company, Ltd.
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Yang Hwan Park
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A63 - SPORTS GAMES AMUSEMENTS