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Tube cleaning apparatus
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Issue date Jan 8, 1980
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Carrier Corporation
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Dana W. Nelson
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F28 - HEAT EXCHANGE IN GENERAL
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3104409
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Patent number 3,104,409
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Issue date Sep 24, 1963
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F28 - HEAT EXCHANGE IN GENERAL
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2672636
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Patent number 2,672,636
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Issue date Mar 23, 1954
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F28 - HEAT EXCHANGE IN GENERAL
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2629887
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Patent number 2,629,887
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Issue date Feb 24, 1953
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F28 - HEAT EXCHANGE IN GENERAL
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2597263
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Patent number 2,597,263
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Issue date May 20, 1952
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F28 - HEAT EXCHANGE IN GENERAL
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2500238
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Patent number 2,500,238
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Issue date Mar 14, 1950
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F28 - HEAT EXCHANGE IN GENERAL
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2411209
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Patent number 2,411,209
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Issue date Nov 19, 1946
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F28 - HEAT EXCHANGE IN GENERAL
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2366131
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Patent number 2,366,131
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Issue date Dec 26, 1944
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F28 - HEAT EXCHANGE IN GENERAL
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2351169
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Patent number 2,351,169
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Issue date Jun 13, 1944
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F28 - HEAT EXCHANGE IN GENERAL
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2351170
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Patent number 2,351,170
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Issue date Jun 13, 1944
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F28 - HEAT EXCHANGE IN GENERAL
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2283521
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Patent number 2,283,521
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Issue date May 19, 1942
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F28 - HEAT EXCHANGE IN GENERAL
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2283522
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Patent number 2,283,522
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Issue date May 19, 1942
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F28 - HEAT EXCHANGE IN GENERAL
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2279922
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Patent number 2,279,922
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Issue date Apr 14, 1942
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F28 - HEAT EXCHANGE IN GENERAL
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2272640
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Patent number 2,272,640
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Issue date Feb 10, 1942
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F28 - HEAT EXCHANGE IN GENERAL
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2257448
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Patent number 2,257,448
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Issue date Sep 30, 1941
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F28 - HEAT EXCHANGE IN GENERAL
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2240845
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Patent number 2,240,845
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Issue date May 6, 1941
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F28 - HEAT EXCHANGE IN GENERAL
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2199109
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Patent number 2,199,109
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Issue date Apr 30, 1940
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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2164689
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Patent number 2,164,689
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Issue date Jul 4, 1939
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F28 - HEAT EXCHANGE IN GENERAL
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2150806
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Patent number 2,150,806
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Issue date Mar 14, 1939
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F28 - HEAT EXCHANGE IN GENERAL
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2138009
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Patent number 2,138,009
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Issue date Nov 29, 1938
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F28 - HEAT EXCHANGE IN GENERAL
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2103760
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Patent number 2,103,760
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Issue date Dec 28, 1937
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F28 - HEAT EXCHANGE IN GENERAL
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2089382
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Patent number 2,089,382
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Issue date Aug 10, 1937
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F28 - HEAT EXCHANGE IN GENERAL
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2079190
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Patent number 2,079,190
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Issue date May 4, 1937
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F28 - HEAT EXCHANGE IN GENERAL
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2068861
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Patent number 2,068,861
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Issue date Jan 26, 1937
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F28 - HEAT EXCHANGE IN GENERAL
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2063991
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Patent number 2,063,991
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Issue date Dec 15, 1936
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F28 - HEAT EXCHANGE IN GENERAL
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2057842
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Patent number 2,057,842
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Issue date Oct 20, 1936
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F28 - HEAT EXCHANGE IN GENERAL
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2052174
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Patent number 2,052,174
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Issue date Aug 25, 1936
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F28 - HEAT EXCHANGE IN GENERAL
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2045761
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Patent number 2,045,761
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Issue date Jun 30, 1936
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F28 - HEAT EXCHANGE IN GENERAL
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2038004
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Patent number 2,038,004
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Issue date Apr 21, 1936
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F28 - HEAT EXCHANGE IN GENERAL
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2025009
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Patent number 2,025,009
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Issue date Dec 17, 1935
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F28 - HEAT EXCHANGE IN GENERAL