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Power assisted wheelchair
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Patent number 6,354,390
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Issue date Mar 12, 2002
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Yamaha Hatsudoki Kabushiki Kaisha
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Atsushi Uchiyama
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B60 - VEHICLES IN GENERAL
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Power assisted vehicle
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Patent number 6,302,226
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Issue date Oct 16, 2001
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Yamaha Hatsudoki Kabushiki Kaisha
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Nobuyuki Kanno
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Electric power-assisted wheelchair
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Patent number 5,818,189
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Issue date Oct 6, 1998
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Yamaha Hatsudoki Kabushiki Kaisha
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Atsushi Uchiyama
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Auto-sailing system
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Patent number 5,271,351
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Issue date Dec 21, 1993
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Yamaha Hatsudoki Kabushiki Kaisha
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Kohtaroh Horiuchi
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B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
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