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Flow rate control valve
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Patent number 5,158,263
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Issue date Oct 27, 1992
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Stec, Inc.
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Tetsuo Shimizu
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Control valve
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Patent number 5,094,430
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Issue date Mar 10, 1992
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Stec, Inc.
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Takashi Shirai
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Fluid control device
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Patent number 4,695,034
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Issue date Sep 22, 1987
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STEC Inc.
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Tetsuo Shimizu
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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