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Priority claimed from DE19702057536external-prioritypatent/DE2057536C3/de
Priority claimed from DE19712128530external-prioritypatent/DE2128530C3/de
Application filed by Siemens AgfiledCriticalSiemens Ag
Application grantedgrantedCritical
Publication of AT320805BpublicationCriticalpatent/AT320805B/de