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2419150
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Patent number 2,419,150
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Issue date Apr 15, 1947
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F22 - STEAM GENERATION
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2343208
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Patent number 2,343,208
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Issue date Feb 29, 1944
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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2273290
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Patent number 2,273,290
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Issue date Feb 17, 1942
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F22 - STEAM GENERATION
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1924918
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Patent number 1,924,918
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Issue date Aug 29, 1933
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F22 - STEAM GENERATION
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1918654
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Patent number 1,918,654
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Issue date Jul 18, 1933
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F22 - STEAM GENERATION
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1879235
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Patent number 1,879,235
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Issue date Sep 27, 1932
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F22 - STEAM GENERATION
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1859619
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Patent number 1,859,619
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Issue date May 24, 1932
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F22 - STEAM GENERATION
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1858143
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Patent number 1,858,143
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Issue date May 10, 1932
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F22 - STEAM GENERATION
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1768319
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Patent number 1,768,319
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Issue date Jun 24, 1930
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F22 - STEAM GENERATION
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1674552
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Patent number 1,674,552
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Issue date Jun 19, 1928
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F22 - STEAM GENERATION
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1385386
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Patent number 1,385,386
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Issue date Jul 26, 1921
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F22 - STEAM GENERATION
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1159181
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Patent number 1,159,181
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Issue date Nov 2, 1915
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F22 - STEAM GENERATION
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1119026
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Patent number 1,119,026
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Issue date Dec 1, 1914
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F22 - STEAM GENERATION
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1119025
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Patent number 1,119,025
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Issue date Dec 1, 1914
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F22 - STEAM GENERATION
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1061180
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Patent number 1,061,180
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Issue date May 6, 1913
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F22 - STEAM GENERATION
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1038172
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Patent number 1,038,172
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Issue date Sep 10, 1912
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F22 - STEAM GENERATION
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1013968
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Patent number 1,013,968
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Issue date Jan 9, 1912
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F22 - STEAM GENERATION
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977234
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Patent number 977,234
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Issue date Nov 29, 1910
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F22 - STEAM GENERATION
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935224
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Patent number 935,224
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Issue date Sep 28, 1909
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F22 - STEAM GENERATION
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935223
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Patent number 935,223
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Issue date Sep 28, 1909
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F22 - STEAM GENERATION
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886087
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Patent number 886,087
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Issue date Apr 28, 1908
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F22 - STEAM GENERATION
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880562
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Patent number 880,562
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Issue date Mar 3, 1908
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F22 - STEAM GENERATION
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859561
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Patent number 859,561
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Issue date Jul 9, 1907
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F22 - STEAM GENERATION
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849875
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Patent number 849,875
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Issue date Apr 9, 1907
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F22 - STEAM GENERATION
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847407
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Patent number 847,407
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Issue date Mar 19, 1907
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F22 - STEAM GENERATION
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843315
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Patent number 843,315
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Issue date Feb 5, 1907
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F22 - STEAM GENERATION
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809683
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Patent number 809,683
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Issue date Jan 9, 1906
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F22 - STEAM GENERATION
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804557
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Patent number 804,557
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Issue date Nov 14, 1905
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F22 - STEAM GENERATION
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804558
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Patent number 804,558
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Issue date Nov 14, 1905
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F22 - STEAM GENERATION
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788170
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Patent number 788,170
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Issue date Apr 25, 1905
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F22 - STEAM GENERATION