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Bowling pin sweeper moving apparatus
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Patent number 4,448,415
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Issue date May 15, 1984
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Patentverwertungs-und Finanzierungsgesellschaft Serania AG
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August Schmid
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A63 - SPORTS GAMES AMUSEMENTS
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Bowling pin positioning apparatus
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Patent number 4,068,845
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Issue date Jan 17, 1978
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Patentverwertungs-und Finanzierungsgesellschaft, Serania AG
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August Schmid
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A63 - SPORTS GAMES AMUSEMENTS
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Bowling ball return mechanism
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Patent number 3,988,023
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Issue date Oct 26, 1976
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Patentverwertungs-und Finanzierungsgesellschaft Serania AG
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August Schmid
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A63 - SPORTS GAMES AMUSEMENTS
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