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Priority claimed from DE3005375Aexternal-prioritypatent/DE3005375C2/de
Priority claimed from DE3037147Aexternal-prioritypatent/DE3037147C2/de
Application filed by Siemens AgfiledCriticalSiemens Ag
Priority claimed from EP81100232Aexternal-prioritypatent/EP0033847B1/de
Application grantedgrantedCritical
Publication of ATE13115T1publicationCriticalpatent/ATE13115T1/de