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Orthodontic attachments
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Patent number 4,927,361
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Issue date May 22, 1990
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Dennis C. Smith
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Bonding to calcified tissues
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Patent number 4,600,383
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Issue date Jul 15, 1986
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Dennis Smith Consulting Limited
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Dennis C. Smith
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Bonding to calcified tissues
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Patent number 4,548,583
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Issue date Oct 22, 1985
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Dennis Smith Consulting Ltd.
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Dennis C. Smith
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Orthodontic attachments
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Patent number 4,460,336
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Issue date Jul 17, 1984
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Dennis C. Smith
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Bonding to calcified tissues
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Patent number 4,382,792
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Issue date May 10, 1983
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Dennis Smith Consulting Limited
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Dennis C. Smith
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE