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Priority claimed from DE3820484Aexternal-prioritypatent/DE3820484A1/en
Priority claimed from DE3903365Aexternal-prioritypatent/DE3903365A1/en
Application filed by Basf AgfiledCriticalBasf Ag
Priority claimed from EP89110566Aexternal-prioritypatent/EP0346789B1/en
Application grantedgrantedCritical
Publication of ATE104664T1publicationCriticalpatent/ATE104664T1/en