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3619416
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Patent number 3,619,416
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Issue date Nov 9, 1971
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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2775541
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Patent number 2,775,541
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Issue date Dec 25, 1956
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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2673833
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Patent number 2,673,833
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Issue date Mar 30, 1954
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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2366899
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Patent number 2,366,899
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Issue date Jan 9, 1945
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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1958583
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Patent number 1,958,583
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Issue date May 15, 1934
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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1871596
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Patent number 1,871,596
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Issue date Aug 16, 1932
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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1495543
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Patent number 1,495,543
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Issue date May 27, 1924
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...