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Priority claimed from US06/161,619external-prioritypatent/US4269939A/en
Priority claimed from US06/161,625external-prioritypatent/US4259451A/en
Application filed by Merck & Co. Inc.filedCriticalMerck & Co. Inc.
Priority claimed from EP81302690Aexternal-prioritypatent/EP0042714B1/en
Application grantedgrantedCritical
Publication of ATE7514T1publicationCriticalpatent/ATE7514T1/en