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3727681
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Patent number 3,727,681
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Issue date Apr 17, 1973
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F28 - HEAT EXCHANGE IN GENERAL
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3344855
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Patent number 3,344,855
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Issue date Oct 3, 1967
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G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING
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3156296
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Patent number 3,156,296
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Issue date Nov 10, 1964
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F22 - STEAM GENERATION
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3134431
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Patent number 3,134,431
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F28 - HEAT EXCHANGE IN GENERAL
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2735658
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Patent number 2,735,658
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F28 - HEAT EXCHANGE IN GENERAL
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2587801
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Patent number 2,587,801
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F28 - HEAT EXCHANGE IN GENERAL
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2577832
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Patent number 2,577,832
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F28 - HEAT EXCHANGE IN GENERAL
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2568984
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Patent number 2,568,984
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Issue date Sep 25, 1951
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F28 - HEAT EXCHANGE IN GENERAL
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2520821
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Patent number 2,520,821
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Issue date Aug 29, 1950
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F28 - HEAT EXCHANGE IN GENERAL
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2513124
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Patent number 2,513,124
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F28 - HEAT EXCHANGE IN GENERAL
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2072466
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Patent number 2,072,466
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F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
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1994198
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Patent number 1,994,198
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D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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1979975
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Patent number 1,979,975
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Issue date Nov 6, 1934
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F28 - HEAT EXCHANGE IN GENERAL
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1926494
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Patent number 1,926,494
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F28 - HEAT EXCHANGE IN GENERAL
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1867605
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Patent number 1,867,605
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F22 - STEAM GENERATION
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1816850
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Patent number 1,816,850
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F28 - HEAT EXCHANGE IN GENERAL
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1722826
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Patent number 1,722,826
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F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
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1683236
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F28 - HEAT EXCHANGE IN GENERAL
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1641999
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F28 - HEAT EXCHANGE IN GENERAL
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1348455
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F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
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1139549
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F28 - HEAT EXCHANGE IN GENERAL
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703793
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F28 - HEAT EXCHANGE IN GENERAL
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472671
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F28 - HEAT EXCHANGE IN GENERAL
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411112
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F28 - HEAT EXCHANGE IN GENERAL
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336802
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F28 - HEAT EXCHANGE IN GENERAL
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320647
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F28 - HEAT EXCHANGE IN GENERAL
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290929
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F28 - HEAT EXCHANGE IN GENERAL
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209929
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Patent number 209,929
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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158398
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Patent number 158,398
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Issue date Jan 5, 1875
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F28 - HEAT EXCHANGE IN GENERAL