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Hybrid type cooling tower
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Patent number 6,938,885
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Issue date Sep 6, 2005
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Kyung In Machinery Co., Ltd.
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Jae-Byeong Koo
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F28 - HEAT EXCHANGE IN GENERAL
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Cooling tower
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Patent number 6,012,708
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Issue date Jan 11, 2000
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Nagano; Shigeru
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Shigeru Nagano
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F28 - HEAT EXCHANGE IN GENERAL
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3707277
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Patent number 3,707,277
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Issue date Dec 26, 1972
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F28 - HEAT EXCHANGE IN GENERAL
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1780020
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Patent number 1,780,020
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Issue date Oct 28, 1930
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F28 - HEAT EXCHANGE IN GENERAL