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Heat pump apparatus
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Patent number 4,528,823
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Issue date Jul 16, 1985
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Hitachi, Ltd.
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Taketoshi Mochizuki
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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Heat exchanger fin
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Patent number 4,469,167
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Issue date Sep 4, 1984
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Hitachi, Ltd.
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Masaaki Itoh
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F24 - HEATING RANGES VENTILATING
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Refrigerating apparatus
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Patent number 4,435,962
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Issue date Mar 13, 1984
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Shin Meiwa Industry Co., Ltd.
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Taketoshi Mochizuki
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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...