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 DE1906211518Dexternal-prioritypatent/DE211518C/de
Priority claimed from DE1906215658Dexternal-prioritypatent/DE215658C/de
Application filed by AegfiledCriticalAeg
Application grantedgrantedCritical
Publication of AT45451BpublicationCriticalpatent/AT45451B/de