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Daniel A. Merkel
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Sheboygan, WI, US
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last 30 patents
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Patent Grant
Orthodontic bracket with rhomboidal profile
Patent number
4,659,309
Issue date
Apr 21, 1987
American Orthodontics Corporation
Daniel A. Merkel
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Patent Grant
Orthodontic appliance
Patent number
4,193,195
Issue date
Mar 18, 1980
American Orthodontics Corporation
Daniel A. Merkel
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE