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Priority claimed from DE3800639Aexternal-prioritypatent/DE3800639A1/en
Application filed by Guenter TeschfiledCriticalGuenter Tesch
Priority claimed from EP88116908Aexternal-prioritypatent/EP0316573B1/en
Application grantedgrantedCritical
Publication of ATE88869T1publicationCriticalpatent/ATE88869T1/en