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Priority claimed from US06/238,911external-prioritypatent/US4321384A/en
Priority claimed from US06/297,645external-prioritypatent/US4365063A/en
Application filed by American Home ProdfiledCriticalAmerican Home Prod
Priority claimed from EP19810306136external-prioritypatent/EP0059291B1/de
Application grantedgrantedCritical
Publication of ATE12392T1publicationCriticalpatent/ATE12392T1/de