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2162834
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Patent number 2,162,834
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Issue date Jun 20, 1939
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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2030334
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Patent number 2,030,334
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Issue date Feb 11, 1936
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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1587589
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Patent number 1,587,589
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Issue date Jun 8, 1926
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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787539
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Patent number 787,539
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Issue date Apr 18, 1905
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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24212
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Patent number 24,212
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Issue date May 31, 1859
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...