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2223456
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Patent number 2,223,456
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Issue date Dec 3, 1940
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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2204318
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Patent number 2,204,318
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Issue date Jun 11, 1940
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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2094461
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Patent number 2,094,461
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Issue date Sep 28, 1937
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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2092810
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Patent number 2,092,810
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Issue date Sep 14, 1937
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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2059269
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Patent number 2,059,269
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Issue date Nov 3, 1936
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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2059268
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Patent number 2,059,268
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Issue date Nov 3, 1936
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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2016184
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Patent number 2,016,184
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Issue date Oct 1, 1935
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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2011598
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Patent number 2,011,598
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Issue date Aug 20, 1935
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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1894607
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Patent number 1,894,607
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Issue date Jan 17, 1933
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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1791213
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Patent number 1,791,213
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Issue date Feb 3, 1931
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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1707249
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Patent number 1,707,249
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Issue date Apr 2, 1929
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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1388430
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Patent number 1,388,430
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Issue date Aug 23, 1921
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...