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Dental tray
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Patent number 5,895,218
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Issue date Apr 20, 1999
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Young Dental Manufacturing Company
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Michael J. Quinn
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Dental tool chuck
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Patent number 5,718,582
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Issue date Feb 17, 1998
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Young Dental Manufacturing
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Michael J. Quinn
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Dental tool chuck
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Patent number 5,542,846
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Issue date Aug 6, 1996
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Young Dental Manufacturing, Co., Inc.
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Michael J. Quinn
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE