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Directional control valve
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Patent number 5,022,434
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Issue date Jun 11, 1991
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Toshiba Machine Co., Ltd.
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Toshiaki Tsukimoto
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F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
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Multiple control valves
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Patent number 4,489,644
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Issue date Dec 25, 1984
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Toshiba Kikai Kabushiki Kaisha
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Toshiaki Tsukimoto
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F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
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Control valve for use in hydraulic apparatus
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Patent number 4,270,567
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Issue date Jun 2, 1981
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Toshiba Kikai Kabushiki Kaisha
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Toshiaki Tsukimoto
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...