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2468514
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Patent number 2,468,514
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Issue date Apr 26, 1949
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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1864749
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Patent number 1,864,749
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Issue date Jun 28, 1932
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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1802539
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Patent number 1,802,539
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Issue date Apr 28, 1931
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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1790571
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Patent number 1,790,571
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Issue date Jan 27, 1931
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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1561899
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Patent number 1,561,899
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Issue date Nov 17, 1925
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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1453215
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Patent number 1,453,215
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Issue date Apr 24, 1923
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...