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Orthodontic bracket
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Patent number 4,752,221
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Issue date Jun 21, 1988
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Augusta Developments, Inc.
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Gustaf H. Hanson
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Orthodontic devices
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Patent number 4,583,944
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Issue date Apr 22, 1986
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Augusta Developments Inc.
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Gustaf H. Hanson
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Orthodontic bracket
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Patent number 4,492,573
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Issue date Jan 8, 1985
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Augusta Developments Inc.
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Gustaf H. Hanson
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Orthodontic arch wires
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Patent number 4,386,909
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Issue date Jun 7, 1983
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Augusta Developments Inc.
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Gustaf H. Hanson
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE