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Priority claimed from US06/666,953external-prioritypatent/US4644005A/en
Priority claimed from US06/762,998external-prioritypatent/US4686224A/en
Application filed by PfizerfiledCriticalPfizer
Application grantedgrantedCritical
Publication of ATE74128T1publicationCriticalpatent/ATE74128T1/de