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Expansion valve
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Patent number 4,548,047
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Issue date Oct 22, 1985
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Hitachi, Ltd.
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Masakatsu Hayashi
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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Air cooling apparatus
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Patent number 4,126,015
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Issue date Nov 21, 1978
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Hitachi, Ltd.
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Kunio Fujie
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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Fluid rotary machine
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Patent number 4,105,372
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Issue date Aug 8, 1978
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Hitachi, Ltd.
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Haruo Mishina
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES