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Priority claimed from DE1899112174Dexternal-prioritypatent/DE112174C/de
Priority claimed from DE1900120375Dexternal-prioritypatent/DE120375C/de
Application filed by Boehringer & SoehnefiledCriticalBoehringer & Soehne
Application grantedgrantedCritical
Publication of AT7847BpublicationCriticalpatent/AT7847B/de