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Priority claimed from DE8913938Uexternal-prioritypatent/DE8913938U1/de
Priority claimed from DE8913936Uexternal-prioritypatent/DE8913936U1/de
Priority claimed from DE8913937Uexternal-prioritypatent/DE8913937U1/de
Application filed by Passavant WerkefiledCriticalPassavant Werke
Priority claimed from EP19900120159external-prioritypatent/EP0429841B1/en
Application grantedgrantedCritical
Publication of ATE77430T1publicationCriticalpatent/ATE77430T1/en