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Diaphragm valve structure
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Patent number 6,105,933
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Issue date Aug 22, 2000
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Kabushiki-Kaisha Motoyama Seisakusho
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Yohichi Kanno
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Metal diaphragm valve
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Patent number RE34303
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Issue date Jul 6, 1993
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Motoyama Eng. Works, Ltd.
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Tadahiro Ohmi
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251 - Valves and valve actuation
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Metal diaphragm valve
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Patent number 4,953,826
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Issue date Sep 4, 1990
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Motoyama Eng. Works, Ltd.
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Tadahiro Ohmi
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Metal diaphragm valve
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Patent number 4,828,219
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Issue date May 9, 1989
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Motoyama Eng. Works, Lts
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Tadahiro Ohmi
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...