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Priority claimed from CA000550349Aexternal-prioritypatent/CA1308108C/en
Application filed by American Home ProdfiledCriticalAmerican Home Prod
Priority claimed from EP19880310046external-prioritypatent/EP0314446B1/en
Application grantedgrantedCritical
Publication of ATE94539T1publicationCriticalpatent/ATE94539T1/en