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Priority claimed from DE19823242942external-prioritypatent/DE3242942A1/en
Application filed by Hartmut GrollfiledCriticalHartmut Groll
Priority claimed from EP83111535Aexternal-prioritypatent/EP0111763B1/en
Application grantedgrantedCritical
Publication of ATE23727T1publicationCriticalpatent/ATE23727T1/en