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Heat exchanger construction
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Patent number 4,429,738
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Issue date Feb 7, 1984
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Karmazin Products Corporation
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Ivan D. Woodhull
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F28 - HEAT EXCHANGE IN GENERAL
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Finned tube coil
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Patent number 4,053,014
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Issue date Oct 11, 1977
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Westinghouse Electric Corporation
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Edward C. Neff
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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3397741
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Patent number 3,397,741
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Issue date Aug 20, 1968
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F28 - HEAT EXCHANGE IN GENERAL
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1940963
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Patent number 1,940,963
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Issue date Dec 26, 1933
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F28 - HEAT EXCHANGE IN GENERAL