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Priority claimed from DE1900119702Dexternal-prioritypatent/DE119702C/de
Priority claimed from DE1900123414Dexternal-prioritypatent/DE123414C/de
Application filed by Siemens AgfiledCriticalSiemens Ag
Application grantedgrantedCritical
Publication of AT11552BpublicationCriticalpatent/AT11552B/de
