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Dental face bow
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Patent number 4,836,779
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Issue date Jun 6, 1989
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Teledyne Hanau
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Richard A. Beu
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Dental face bow
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Patent number 4,330,277
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Issue date May 18, 1982
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Teledyne Hanau
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Richard A. Beu
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Dental articulator
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Patent number 4,323,346
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Issue date Apr 6, 1982
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Teledyne Hanau, a division of Teledyne, Inc.
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Richard A. Beu
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Dental articulator
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Patent number 4,305,708
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Issue date Dec 15, 1981
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Teledyne Hanau, a division of Teledyne, Inc.
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Richard A. Beu
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Three-section self-sealing dental flask
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Patent number 4,218,205
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Issue date Aug 19, 1980
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Teledyne Hanau Division of Teledyne, Inc.
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Richard A. Beu
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL