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Extraction process
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Patent number 4,533,459
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Issue date Aug 6, 1985
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RTR Riotinto Til Holding S.A.
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Mario Dente
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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Digester
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Patent number 4,512,956
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Issue date Apr 23, 1985
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Lee F. Robinson
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Recovery of hydrocarbons from tar sands
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Patent number 4,459,200
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Issue date Jul 10, 1984
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Ingeco International S.A.
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Mario Dente
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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