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Priority claimed from US06/388,323external-prioritypatent/US4427678A/en
Priority claimed from US06/434,371external-prioritypatent/US4452796A/en
Application filed by PfizerfiledCriticalPfizer
Priority claimed from EP83300042Aexternal-prioritypatent/EP0084925B1/en
Application grantedgrantedCritical
Publication of ATE19084T1publicationCriticalpatent/ATE19084T1/en