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3217796
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B64 - AIRCRAFT AVIATION COSMONAUTICS
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1420590
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Patent number 1,420,590
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Issue date Jun 20, 1922
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F28 - HEAT EXCHANGE IN GENERAL
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1406256
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Patent number 1,406,256
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Issue date Feb 14, 1922
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F28 - HEAT EXCHANGE IN GENERAL
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1397116
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Patent number 1,397,116
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Issue date Nov 15, 1921
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F28 - HEAT EXCHANGE IN GENERAL
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1393479
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Patent number 1,393,479
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Issue date Oct 11, 1921
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F28 - HEAT EXCHANGE IN GENERAL
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1327213
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Patent number 1,327,213
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Issue date Jan 6, 1920
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F28 - HEAT EXCHANGE IN GENERAL
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1290139
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Patent number 1,290,139
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F28 - HEAT EXCHANGE IN GENERAL
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1086252
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Patent number 1,086,252
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Issue date Feb 3, 1914
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F28 - HEAT EXCHANGE IN GENERAL
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1067411
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Patent number 1,067,411
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Issue date Jul 15, 1913
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F28 - HEAT EXCHANGE IN GENERAL
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1040548
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Patent number 1,040,548
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Issue date Oct 8, 1912
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F28 - HEAT EXCHANGE IN GENERAL
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989243
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Patent number 989,243
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F28 - HEAT EXCHANGE IN GENERAL
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979414
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Patent number 979,414
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F28 - HEAT EXCHANGE IN GENERAL
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966218
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Patent number 966,218
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F28 - HEAT EXCHANGE IN GENERAL
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883808
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Patent number 883,808
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F28 - HEAT EXCHANGE IN GENERAL
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869042
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Patent number 869,042
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F28 - HEAT EXCHANGE IN GENERAL
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819911
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Patent number 819,911
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F28 - HEAT EXCHANGE IN GENERAL
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786886
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Patent number 786,886
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F28 - HEAT EXCHANGE IN GENERAL
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716228
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Patent number 716,228
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F28 - HEAT EXCHANGE IN GENERAL
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614658
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F28 - HEAT EXCHANGE IN GENERAL
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599897
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Patent number 599,897
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F28 - HEAT EXCHANGE IN GENERAL
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588312
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Patent number 588,312
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F28 - HEAT EXCHANGE IN GENERAL
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584993
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Patent number 584,993
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Issue date Jun 22, 1897
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F28 - HEAT EXCHANGE IN GENERAL
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569040
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Patent number 569,040
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F28 - HEAT EXCHANGE IN GENERAL
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560090
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F28 - HEAT EXCHANGE IN GENERAL
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534029
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F28 - HEAT EXCHANGE IN GENERAL
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521832
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F28 - HEAT EXCHANGE IN GENERAL
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468640
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F28 - HEAT EXCHANGE IN GENERAL
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386556
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F28 - HEAT EXCHANGE IN GENERAL
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360319
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Patent number 360,319
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F28 - HEAT EXCHANGE IN GENERAL
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274826
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Patent number 274,826
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F28 - HEAT EXCHANGE IN GENERAL