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Convective heater
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Patent number 4,576,121
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Issue date Mar 18, 1986
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International Coal Refining Company
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Robert M. Thorogood
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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Economizer
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Patent number 4,031,862
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Issue date Jun 28, 1977
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Frank J. Smith
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F28 - HEAT EXCHANGE IN GENERAL
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2372675
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Patent number 2,372,675
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Issue date Apr 3, 1945
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F22 - STEAM GENERATION
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2328039
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Patent number 2,328,039
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Issue date Aug 31, 1943
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F22 - STEAM GENERATION
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2296999
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Patent number 2,296,999
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Issue date Sep 29, 1942
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F22 - STEAM GENERATION
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2119118
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Patent number 2,119,118
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Issue date May 31, 1938
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F22 - STEAM GENERATION
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2088931
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Patent number 2,088,931
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Issue date Aug 3, 1937
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F22 - STEAM GENERATION
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2075044
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Patent number 2,075,044
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Issue date Mar 30, 1937
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F22 - STEAM GENERATION
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2067670
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Patent number 2,067,670
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Issue date Jan 12, 1937
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F22 - STEAM GENERATION
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2014197
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Patent number 2,014,197
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Issue date Sep 10, 1935
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F22 - STEAM GENERATION
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2007309
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Patent number 2,007,309
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Issue date Jul 9, 1935
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F22 - STEAM GENERATION
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1919192
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Patent number 1,919,192
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Issue date Jul 25, 1933
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F28 - HEAT EXCHANGE IN GENERAL
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1911375
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Patent number 1,911,375
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Issue date May 30, 1933
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F22 - STEAM GENERATION
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1905470
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Patent number 1,905,470
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Issue date Apr 25, 1933
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F22 - STEAM GENERATION
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1883123
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Patent number 1,883,123
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Issue date Oct 18, 1932
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F22 - STEAM GENERATION
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1883312
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Patent number 1,883,312
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Issue date Oct 18, 1932
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F22 - STEAM GENERATION
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1878134
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Patent number 1,878,134
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Issue date Sep 20, 1932
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F22 - STEAM GENERATION
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1867605
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Patent number 1,867,605
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Issue date Jul 19, 1932
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F22 - STEAM GENERATION
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1827201
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Patent number 1,827,201
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Issue date Oct 13, 1931
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F22 - STEAM GENERATION
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1818769
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Patent number 1,818,769
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Issue date Aug 11, 1931
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F22 - STEAM GENERATION
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1813405
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Patent number 1,813,405
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Issue date Jul 7, 1931
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F22 - STEAM GENERATION
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1804939
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Patent number 1,804,939
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Issue date May 12, 1931
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F22 - STEAM GENERATION
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1774142
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Patent number 1,774,142
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Issue date Aug 26, 1930
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F22 - STEAM GENERATION
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1762134
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Patent number 1,762,134
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Issue date Jun 3, 1930
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F22 - STEAM GENERATION