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Priority claimed from DE19803018856external-prioritypatent/DE3018856A1/en
Priority claimed from DE19803021452external-prioritypatent/DE3021452A1/en
Application filed by Siemens AgfiledCriticalSiemens Ag
Priority claimed from EP81103655Aexternal-prioritypatent/EP0040390B1/en
Application grantedgrantedCritical
Publication of ATE12142T1publicationCriticalpatent/ATE12142T1/en