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Priority claimed from DE19813140711external-prioritypatent/DE3140711C2/de
Priority claimed from DE3228743Aexternal-prioritypatent/DE3228743C2/de
Application filed by Koeppern & Co Kg MaschffiledCriticalKoeppern & Co Kg Maschf
Priority claimed from EP82109056Aexternal-prioritypatent/EP0076980B1/de
Application grantedgrantedCritical
Publication of ATE21647T1publicationCriticalpatent/ATE21647T1/de