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Joining structure of resin parts
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Patent number 6,706,357
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Issue date Mar 16, 2004
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Kyosan Denki Co., Ltd.
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Norikazu Sugimura
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Jointing apparatus of thermo plastic pipes
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Patent number 6,029,727
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Issue date Feb 29, 2000
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Nippon Kokan Koji Kabushiki Kaisha
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Hirokazu Nomura
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Friction welding apparatus
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Patent number 4,247,346
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Issue date Jan 27, 1981
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Asahi Kasei Kogyo Kabushiki Kaisha
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Kazuo Maehara
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL