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Priority claimed from US07/025,900external-prioritypatent/US4760159A/en
Application filed by Standard Oil Co OhiofiledCriticalStandard Oil Co Ohio
Priority claimed from EP88302110Aexternal-prioritypatent/EP0282314B1/en
Application grantedgrantedCritical
Publication of ATE90337T1publicationCriticalpatent/ATE90337T1/en