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Priority claimed from DE2415398Aexternal-prioritypatent/DE2415398C3/en
Priority claimed from DE2509177Aexternal-prioritypatent/DE2509177C3/en
Application filed by Siemens AgfiledCriticalSiemens Ag
Publication of ATA796476ApublicationCriticalpatent/ATA796476A/en
Application grantedgrantedCritical
Publication of AT344824BpublicationCriticalpatent/AT344824B/en