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Mold unit for injection molding
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Patent number 5,114,329
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Issue date May 19, 1992
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Sankyo Engineering Co., Ltd.
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Susumu Nakamura
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Injection metal mold
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Patent number 4,923,388
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Issue date May 8, 1990
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Sankyo Engineering Co., Ltd.
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Hajime Nakamura
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Nozzle touch sprue bushing device
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Patent number 4,917,595
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Issue date Apr 17, 1990
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Sankyo Engineering Co., Ltd.
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Susumu Nakamura
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Slide core mold and injection molding
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Patent number 4,889,480
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Issue date Dec 26, 1989
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Sankyo Engineering Co., Ltd.
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Susumu Nakamura
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL