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Electric dart game
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Patent number 6,089,571
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Issue date Jul 18, 2000
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Kunlin Cho
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F41 - WEAPONS
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3705725
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Patent number 3,705,725
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Issue date Dec 12, 1972
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F41 - WEAPONS
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3580579
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Patent number 3,580,579
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Issue date May 25, 1971
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F41 - WEAPONS
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3529828
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Patent number 3,529,828
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Issue date Sep 22, 1970
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F41 - WEAPONS
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3341204
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Patent number 3,341,204
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Issue date Sep 12, 1967
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F41 - WEAPONS
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2506475
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Patent number 2,506,475
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Issue date May 2, 1950
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F41 - WEAPONS
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2107211
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Patent number 2,107,211
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Issue date Feb 1, 1938
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F41 - WEAPONS