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Mobile work robot system
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Patent number 5,959,423
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Issue date Sep 28, 1999
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Minolta Co., Ltd.
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Hideaki Nakanishi
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Cleaning robot
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Patent number 5,815,880
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Issue date Oct 6, 1998
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Minolta Co., Ltd.
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Hideaki Nakanishi
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A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
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Cleaner
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Patent number 5,613,261
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Issue date Mar 25, 1997
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Minolta Co., Ltd.
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Yuichi Kawakami
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A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...