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Teeth separating apparatus
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Patent number 8,070,490
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Issue date Dec 6, 2011
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Danville Materials, Inc.
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Patrick L. Roetzer
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Air abrasive particle apparatus
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Patent number 5,984,677
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Issue date Nov 16, 1999
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Danville Engineering
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Mark S. Fernwood
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Friable abrasive media
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Patent number 5,984,678
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Issue date Nov 16, 1999
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Danville Engineering
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Craig R Bruns
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Friable abrasive media
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Patent number 5,810,587
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Issue date Sep 22, 1998
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Danville Engineering
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Craig R. Bruns
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Air abrasive particle apparatus
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Patent number 5,718,581
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Issue date Feb 17, 1998
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Danville Manufacturing, Inc.
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Mark S. Fernwood
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE