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Priority claimed from DE1902143886Dexternal-prioritypatent/DE143886C/de
Application filed by Siemens AgfiledCriticalSiemens Ag
Priority to AT17783DpriorityCriticalpatent/AT17783B/de
Application grantedgrantedCritical
Publication of AT16104BpublicationCriticalpatent/AT16104B/de