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Heat exchanger system
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Patent number 4,108,240
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Issue date Aug 22, 1978
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Aktiebolaget Atomenergi
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Peter Heinrich Erwin Margen
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3077226
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Patent number 3,077,226
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Issue date Feb 12, 1963
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F28 - HEAT EXCHANGE IN GENERAL
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2812925
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Patent number 2,812,925
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Issue date Nov 12, 1957
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F28 - HEAT EXCHANGE IN GENERAL
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2504798
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Patent number 2,504,798
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Issue date Apr 18, 1950
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F28 - HEAT EXCHANGE IN GENERAL
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650473
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Patent number 650,473
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Issue date May 29, 1900
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F28 - HEAT EXCHANGE IN GENERAL