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Priority claimed from DE3204849Aexternal-prioritypatent/DE3204849C2/de
Priority claimed from DE3210370Aexternal-prioritypatent/DE3210370C2/de
Application filed by Walter Professor Dr HelmboldfiledCriticalWalter Professor Dr Helmbold
Application grantedgrantedCritical
Publication of ATE19548T1publicationCriticalpatent/ATE19548T1/de