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Teaching toy telephone
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Patent number D420405
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Issue date Feb 8, 2000
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Learning Resources, Inc.
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Barbara Plain
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D21 - Games, toys, and sports goods
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Slide viewer
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Patent number D407423
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Issue date Mar 30, 1999
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Learning Resources, Inc.
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Lonnie Pogue
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D16 - Photography and optical equipment
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Educational balance
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Patent number D379315
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Issue date May 20, 1997
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Richard Woldenberg
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D10 - Measuring, testing, or signalling instruments
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Ocular unit for eye surgery
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Patent number D325086
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Issue date Mar 31, 1992
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Alcon Surgical, Inc.
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Steve Charles
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D24 - Medical and laboratory equipment
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Snail trap
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Patent number 4,761,912
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Issue date Aug 9, 1988
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Robert L. Dyer
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING