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Priority claimed from DE19803023332external-prioritypatent/DE3023332C2/de
Priority claimed from DE19803032420external-prioritypatent/DE3032420C2/de
Application filed by Walter Hebel Gmbh & CofiledCriticalWalter Hebel Gmbh & Co
Priority claimed from EP19810104788external-prioritypatent/EP0042610B1/de
Application grantedgrantedCritical
Publication of ATE11021T1publicationCriticalpatent/ATE11021T1/de