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Composite molded article
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Patent number 5,225,264
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Issue date Jul 6, 1993
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Yamaha Corporation
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Nobuji Kato
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Improved slat for blinds
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Patent number 5,121,785
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Issue date Jun 16, 1992
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Yamaha Corporation
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Hisayoshi Ohsumi
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B32 - LAYERED PRODUCTS
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Resin-treated woody material
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Patent number 4,637,954
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Issue date Jan 20, 1987
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Nippon Gakki Seizo Kabushiki Kaisha
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Hisayoshi Ohsumi
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B32 - LAYERED PRODUCTS