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Priority claimed from DET28635Aexternal-prioritypatent/DE1240919B/de
Application filed by Telefunken PatentfiledCriticalTelefunken Patent
Priority to DK532472ApriorityCriticalpatent/DK140917B/da
Publication of DK140917BpublicationCriticalpatent/DK140917B/da
Application grantedgrantedCritical
Publication of DK140917CpublicationCriticalpatent/DK140917C/da