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Design-making instrument
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Patent number 5,134,778
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Issue date Aug 4, 1992
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Patrick MacCarthy
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B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
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Liquid kaleidoscope
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Patent number 4,740,046
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Issue date Apr 26, 1988
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Patrick MacCarthy
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G02 - OPTICS
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Return top
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Patent number D275582
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Issue date Sep 18, 1984
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Patrick MacCarthy
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D21 - Games, toys, and sports goods
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Tape-supported yo-yo
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Patent number 4,290,224
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Issue date Sep 22, 1981
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Bisque; Ramon E.
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Patrick MacCarthy
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A63 - SPORTS GAMES AMUSEMENTS