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Valve
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Patent number RE33782
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Issue date Dec 31, 1991
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Toyo Engineering Corporation
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Yuichi Fujita
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251 - Valves and valve actuation
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Valve
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Patent number 4,789,132
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Issue date Dec 6, 1988
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Toyo Engineering Corporation
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Yuichi Fujita
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Heat exchanger with U-tubes
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Patent number 4,368,778
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Issue date Jan 18, 1983
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Toyo Engineering Corporation
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Yoshinori Nishimura
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F28 - HEAT EXCHANGE IN GENERAL
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Waste heat boiler
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Patent number 4,336,770
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Issue date Jun 29, 1982
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Toyo Engineering Corporation
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Takayuki Kaneko
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F28 - HEAT EXCHANGE IN GENERAL