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3734402
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Patent number 3,734,402
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Issue date May 22, 1973
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F22 - STEAM GENERATION
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3552646
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Patent number 3,552,646
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Issue date Jan 5, 1971
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F22 - STEAM GENERATION
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3387593
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Patent number 3,387,593
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Issue date Jun 11, 1968
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F22 - STEAM GENERATION
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3277912
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Patent number 3,277,912
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Issue date Oct 11, 1966
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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3227170
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Patent number 3,227,170
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Issue date Jan 4, 1966
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F22 - STEAM GENERATION
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3227144
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Patent number 3,227,144
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Issue date Jan 4, 1966
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F22 - STEAM GENERATION
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3205871
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Patent number 3,205,871
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Issue date Sep 14, 1965
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G05 - CONTROLLING REGULATING
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3113750
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Patent number 3,113,750
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Issue date Dec 10, 1963
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B64 - AIRCRAFT AVIATION COSMONAUTICS
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3027088
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Patent number 3,027,088
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Issue date Mar 27, 1962
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G05 - CONTROLLING REGULATING
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2985017
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Patent number 2,985,017
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Issue date May 23, 1961
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G01 - MEASURING TESTING
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2778917
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Patent number 2,778,917
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Issue date Jan 22, 1957
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F22 - STEAM GENERATION
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2619566
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Patent number 2,619,566
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Issue date Nov 25, 1952
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G01 - MEASURING TESTING
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2431110
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Patent number 2,431,110
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Issue date Nov 18, 1947
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F22 - STEAM GENERATION
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2356283
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Patent number 2,356,283
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Issue date Aug 22, 1944
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F22 - STEAM GENERATION
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2313255
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Patent number 2,313,255
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Issue date Mar 9, 1943
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F22 - STEAM GENERATION
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2313449
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Patent number 2,313,449
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Issue date Mar 9, 1943
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F22 - STEAM GENERATION
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2301633
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Patent number 2,301,633
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Issue date Nov 10, 1942
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F22 - STEAM GENERATION
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2277533
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Patent number 2,277,533
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Issue date Mar 24, 1942
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F22 - STEAM GENERATION
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2242798
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Patent number 2,242,798
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Issue date May 20, 1941
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F22 - STEAM GENERATION
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2216351
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Patent number 2,216,351
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Issue date Oct 1, 1940
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F22 - STEAM GENERATION
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2200124
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Patent number 2,200,124
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Issue date May 7, 1940
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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2157163
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Patent number 2,157,163
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Issue date May 9, 1939
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F22 - STEAM GENERATION
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2014964
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Patent number 2,014,964
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Issue date Sep 17, 1935
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F22 - STEAM GENERATION
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2001686
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Patent number 2,001,686
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Issue date May 14, 1935
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F22 - STEAM GENERATION