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Removable denture retaining structure
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Patent number 4,738,622
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Issue date Apr 19, 1988
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Wada Seimitsu Shiken Kabushiki Kaisha
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Haruyuki Kawahara
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Removable denture retaining structure
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Patent number 4,731,020
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Issue date Mar 15, 1988
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Wada Seimitsu Shiken Kabushiki Kaisha
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Haruyuki Kawahara
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Dental cement compositions
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Patent number 4,647,600
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Issue date Mar 3, 1987
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G-C Dental Industrial Corp.
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Haruyuki Kawahara
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Bio-functional denture
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Patent number 4,439,153
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Issue date Mar 27, 1984
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Wada Seimitsu Shiken Kabushiki Kaisha
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Haruyuki Kawahara
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Dental restorative composition
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Patent number 4,431,421
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Issue date Feb 14, 1984
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Kanebo, Ltd.
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Haruyuki Kawahara
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Ceramic endosseous implant
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Patent number 4,259,072
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Issue date Mar 31, 1981
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Kyoto Ceramic Co., Ltd.
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Masaya Hirabayashi
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Burnt ceramic bone implant
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Patent number 4,155,124
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Issue date May 22, 1979
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Kyoto Ceramic Co., Ltd.
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Haruyuki Kawahara
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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