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Endoscope system
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Patent number 5,301,061
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Issue date Apr 5, 1994
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Olympus Optical Co., Ltd.
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Akio Nakada
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Borescope apparatus
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Patent number 5,096,292
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Issue date Mar 17, 1992
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Olympus Optical Co., Ltd.
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Nobuyuki Sakamoto
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Endoscope
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Patent number 4,558,691
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Issue date Dec 17, 1985
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Olympus Optical Co. Ltd.
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Minoru Okada
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE