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Acid extractable petroleum fuel markers
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Patent number 5,490,872
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Issue date Feb 13, 1996
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Morton International, Inc.
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Michael R. Friswell
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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Base extractable petroleum markers
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Patent number 5,252,106
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Issue date Oct 12, 1993
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Morton International, Inc.
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Michael J. Hallisy
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...