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Multi-row heat exchanger
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Patent number 5,954,125
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Issue date Sep 21, 1999
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Carrier Corporation
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Carlo Mantegazza
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Refrigeration apparatus
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Patent number 5,797,451
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Issue date Aug 25, 1998
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Norfrost Limited
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Alexander Grant
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F28 - HEAT EXCHANGE IN GENERAL
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Heat exchanger tube circuits
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Patent number 4,446,915
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Issue date May 8, 1984
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The Trane Company
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Donald C. Welch
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F28 - HEAT EXCHANGE IN GENERAL
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3815672
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Patent number 3,815,672
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Issue date Jun 11, 1974
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3780799
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Patent number 3,780,799
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Issue date Dec 25, 1973
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3433300
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Patent number 3,433,300
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Issue date Mar 18, 1969
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3217798
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Patent number 3,217,798
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Issue date Nov 16, 1965
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F28 - HEAT EXCHANGE IN GENERAL
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2540339
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Patent number 2,540,339
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Issue date Feb 6, 1951
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F28 - HEAT EXCHANGE IN GENERAL
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2427336
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Patent number 2,427,336
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Issue date Sep 16, 1947
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F28 - HEAT EXCHANGE IN GENERAL
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2205984
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Patent number 2,205,984
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Issue date Jun 25, 1940
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F28 - HEAT EXCHANGE IN GENERAL
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2038912
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Patent number 2,038,912
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Issue date Apr 28, 1936
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F28 - HEAT EXCHANGE IN GENERAL
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1788068
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Patent number 1,788,068
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Issue date Jan 6, 1931
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F28 - HEAT EXCHANGE IN GENERAL