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 Du PontfiledCriticalDu Pont
Priority claimed from EP19810300956external-prioritypatent/EP0035893B1/en
Application grantedgrantedCritical
Publication of ATE16554T1publicationCriticalpatent/ATE16554T1/en