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
Application filed by Hugo GraepelfiledCriticalHugo Graepel
Priority to AT12467DpriorityCriticalpatent/AT12467B/de
Application grantedgrantedCritical
Publication of AT12467BpublicationCriticalpatent/AT12467B/de