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 DE1902136995Dexternal-prioritypatent/DE136995C/de
Application filed by Otto RicklefsfiledCriticalOtto Ricklefs
Application grantedgrantedCritical
Publication of AT13836BpublicationCriticalpatent/AT13836B/de