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Heat exchange structure
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Patent number 4,519,442
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Issue date May 28, 1985
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Kaiser Aluminum & Chemical Corporation
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Gordon L. Barna
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F28 - HEAT EXCHANGE IN GENERAL
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3488041
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Patent number 3,488,041
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Issue date Jan 6, 1970
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C21 - METALLURGY OF IRON
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3463466
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Patent number 3,463,466
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Issue date Aug 26, 1969
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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3326541
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Patent number 3,326,541
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Issue date Jun 20, 1967
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C03 - GLASS MINERAL OR SLAG WOOL
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2598262
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Patent number 2,598,262
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Issue date May 27, 1952
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F28 - HEAT EXCHANGE IN GENERAL
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2532112
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Patent number 2,532,112
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Issue date Nov 28, 1950
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F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
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1989400
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Patent number 1,989,400
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Issue date Jan 29, 1935
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F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
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1964830
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Patent number 1,964,830
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Issue date Jul 3, 1934
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C21 - METALLURGY OF IRON
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1951579
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Patent number 1,951,579
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Issue date Mar 20, 1934
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C21 - METALLURGY OF IRON
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1916458
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Patent number 1,916,458
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Issue date Jul 4, 1933
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C21 - METALLURGY OF IRON
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1880011
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Patent number 1,880,011
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Issue date Sep 27, 1932
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C21 - METALLURGY OF IRON
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1848242
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Patent number 1,848,242
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Issue date Mar 8, 1932
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F28 - HEAT EXCHANGE IN GENERAL
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1836412
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Patent number 1,836,412
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Issue date Dec 15, 1931
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F28 - HEAT EXCHANGE IN GENERAL
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1771242
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Patent number 1,771,242
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Issue date Jul 22, 1930
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C21 - METALLURGY OF IRON
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1771298
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Patent number 1,771,298
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Issue date Jul 22, 1930
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C21 - METALLURGY OF IRON
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1771286
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Patent number 1,771,286
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Issue date Jul 22, 1930
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C21 - METALLURGY OF IRON
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1682131
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Patent number 1,682,131
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Issue date Aug 28, 1928
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C21 - METALLURGY OF IRON
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1361709
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Patent number 1,361,709
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Issue date Dec 7, 1920
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F28 - HEAT EXCHANGE IN GENERAL
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1233114
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Patent number 1,233,114
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Issue date Jul 10, 1917
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C21 - METALLURGY OF IRON
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1207617
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Patent number 1,207,617
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C21 - METALLURGY OF IRON
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1165340
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Issue date Dec 21, 1915
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C21 - METALLURGY OF IRON
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1140125
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Patent number 1,140,125
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F28 - HEAT EXCHANGE IN GENERAL
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606083
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Patent number 606,083
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Issue date Jun 21, 1898
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C21 - METALLURGY OF IRON
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490726
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Patent number 490,726
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Issue date Jan 31, 1893
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F28 - HEAT EXCHANGE IN GENERAL
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429342
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Patent number 429,342
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Issue date Jun 3, 1890
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F28 - HEAT EXCHANGE IN GENERAL
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280872
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Patent number 280,872
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Issue date Jul 10, 1883
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F28 - HEAT EXCHANGE IN GENERAL
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252909
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Patent number 252,909
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Issue date Jan 31, 1882
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F28 - HEAT EXCHANGE IN GENERAL
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19388
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Patent number 19,388
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Issue date Feb 16, 1858
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING