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Coupling for use with container valve
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Patent number 5,924,747
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Issue date Jul 20, 1999
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Sanko Kogyo Co., Ltd.
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Naoya Miyashita
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Union joint
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Patent number 5,118,141
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Issue date Jun 2, 1992
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Sanko Kogyo Kabushiki Kaisha
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Tomio Miyashita
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Union joint
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Patent number 5,050,914
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Issue date Sep 24, 1991
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Sanko Kogyo Kabushiki Kaisha
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Tomio Miyashita
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Superfine finish piping joint
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Patent number 4,685,707
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Issue date Aug 11, 1987
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Sanko Kogyo Kabushiki Kaisha
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Naoya Miyashita
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...