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Priority claimed from US06/656,645external-prioritypatent/US4585434A/en
Priority claimed from US06/656,644external-prioritypatent/US4585433A/en
Application filed by Du PontfiledCriticalDu Pont
Priority claimed from EP19850112238external-prioritypatent/EP0177849B1/en
Application grantedgrantedCritical
Publication of ATE48548T1publicationCriticalpatent/ATE48548T1/en