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
Application filed by American Home ProdfiledCriticalAmerican Home Prod
Priority claimed from EP19860307953external-prioritypatent/EP0220873B1/de
Application grantedgrantedCritical
Publication of ATE97666T1publicationCriticalpatent/ATE97666T1/de