Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE1898119265Dexternal-prioritypatent/DE119265C/de
Application filed by Friedrich FolfiledCriticalFriedrich Fol
Application grantedgrantedCritical
Publication of AT6251BpublicationCriticalpatent/AT6251B/de