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Priority claimed from DE19813104903external-prioritypatent/DE3104903C2/de
Priority claimed from DE19813104928external-prioritypatent/DE3104928C2/de
Application filed by Siemens AgfiledCriticalSiemens Ag
Priority claimed from EP81108821Aexternal-prioritypatent/EP0057756B1/de
Application grantedgrantedCritical
Publication of ATE11971T1publicationCriticalpatent/ATE11971T1/de