Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US06/429,915external-prioritypatent/US4457924A/en
Application filed by PfizerfiledCriticalPfizer
Application grantedgrantedCritical
Publication of ATE18051T1publicationCriticalpatent/ATE18051T1/de