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Priority claimed from US06/223,514external-prioritypatent/US4374285A/en
Priority claimed from US06/224,199external-prioritypatent/US4371724A/en
Application filed by Texaco Development CorpfiledCriticalTexaco Development Corp
Priority claimed from EP19820300010external-prioritypatent/EP0056679B1/en
Application grantedgrantedCritical
Publication of ATE12762T1publicationCriticalpatent/ATE12762T1/en