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Cogeneration system
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Patent number 6,584,793
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Issue date Jul 1, 2003
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Hitachi, Ltd.
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Toshihiko Fukushima
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F28 - HEAT EXCHANGE IN GENERAL
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Refrigeration cycle
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Patent number 6,018,963
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Issue date Feb 1, 2000
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Hitachi, Ltd.
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Masaaki Itoh
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F28 - HEAT EXCHANGE IN GENERAL
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Heat exchanger
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Patent number 5,803,165
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Issue date Sep 8, 1998
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Hitachi, Ltd.
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Naoki Shikazono
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F28 - HEAT EXCHANGE IN GENERAL
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Chemical heat pump
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Patent number 5,186,241
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Issue date Feb 16, 1993
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Hitachi, Ltd.
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Yoshifumi Kunugi
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F28 - HEAT EXCHANGE IN GENERAL
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Refrigerant flow control device
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Patent number 4,617,804
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Issue date Oct 21, 1986
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Hitachi, Ltd.
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Toshihiko Fukushima
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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