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Condensing heat exchanger
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Patent number 4,240,502
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Issue date Dec 23, 1980
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Hudson Products Corporation
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Michael W. Larinoff
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F28 - HEAT EXCHANGE IN GENERAL
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Tube bundle
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Patent number 4,168,742
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Issue date Sep 25, 1979
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Hudson Products Corporation
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George E. Kluppel
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F28 - HEAT EXCHANGE IN GENERAL
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Blowoff baffle
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Patent number 4,000,779
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Issue date Jan 4, 1977
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General Electric Company
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John W. Irwin
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F24 - HEATING RANGES VENTILATING
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3887002
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Patent number 3,887,002
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Issue date Jun 3, 1975
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F28 - HEAT EXCHANGE IN GENERAL
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3705621
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Patent number 3,705,621
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Issue date Dec 12, 1972
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F28 - HEAT EXCHANGE IN GENERAL
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3612172
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Patent number 3,612,172
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Issue date Oct 12, 1971
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F28 - HEAT EXCHANGE IN GENERAL
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3557869
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Patent number 3,557,869
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Issue date Jan 26, 1971
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G01 - MEASURING TESTING
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3480077
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Patent number 3,480,077
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Issue date Nov 25, 1969
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F28 - HEAT EXCHANGE IN GENERAL
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2797898
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Patent number 2,797,898
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Issue date Jul 2, 1957
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F22 - STEAM GENERATION
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1908463
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Patent number 1,908,463
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Issue date May 9, 1933
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F28 - HEAT EXCHANGE IN GENERAL
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1604179
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Patent number 1,604,179
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Issue date Oct 26, 1926
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F28 - HEAT EXCHANGE IN GENERAL
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1489420
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Patent number 1,489,420
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Issue date Apr 8, 1924
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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1478206
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Patent number 1,478,206
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Issue date Dec 18, 1923
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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1385827
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Patent number 1,385,827
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Issue date Jul 26, 1921
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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1234438
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Patent number 1,234,438
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Issue date Jul 24, 1917
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F28 - HEAT EXCHANGE IN GENERAL
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1198629
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Patent number 1,198,629
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Issue date Sep 19, 1916
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F28 - HEAT EXCHANGE IN GENERAL
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1144780
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Patent number 1,144,780
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Issue date Jun 29, 1915
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F28 - HEAT EXCHANGE IN GENERAL
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1134518
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Patent number 1,134,518
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Issue date Apr 6, 1915
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F28 - HEAT EXCHANGE IN GENERAL
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900827
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Patent number 900,827
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Issue date Oct 13, 1908
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F28 - HEAT EXCHANGE IN GENERAL
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856141
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Patent number 856,141
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Issue date Jun 4, 1907
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F28 - HEAT EXCHANGE IN GENERAL
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803154
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Patent number 803,154
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Issue date Oct 31, 1905
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F28 - HEAT EXCHANGE IN GENERAL
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554384
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Patent number 554,384
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Issue date Feb 11, 1896
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F28 - HEAT EXCHANGE IN GENERAL
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548105
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Patent number 548,105
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Issue date Oct 15, 1895
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F28 - HEAT EXCHANGE IN GENERAL
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507039
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Patent number 507,039
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Issue date Oct 17, 1893
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F28 - HEAT EXCHANGE IN GENERAL
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309027
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Patent number 309,027
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Issue date Dec 9, 1884
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F28 - HEAT EXCHANGE IN GENERAL
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234462
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Patent number 234,462
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Issue date Nov 16, 1880
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F28 - HEAT EXCHANGE IN GENERAL
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189578
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Patent number 189,578
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Issue date Apr 17, 1877
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F28 - HEAT EXCHANGE IN GENERAL
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118601
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Patent number 118,601
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Issue date Aug 29, 1871
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F28 - HEAT EXCHANGE IN GENERAL
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117127
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Patent number 117,127
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Issue date Jul 18, 1871
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F28 - HEAT EXCHANGE IN GENERAL