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Priority claimed from DE19813119694external-prioritypatent/DE3119694C2/en
Priority claimed from DE19813119693external-prioritypatent/DE3119693C2/en
Application filed by Friedhelm PorsfeldfiledCriticalFriedhelm Porsfeld
Priority claimed from EP19820104145external-prioritypatent/EP0065276B1/en
Application grantedgrantedCritical
Publication of ATE17675T1publicationCriticalpatent/ATE17675T1/en