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 Waagner Biro AgfiledCriticalWaagner Biro Ag
Priority to AT491359ApriorityCriticalpatent/AT214369B/de
Application grantedgrantedCritical
Publication of AT214369BpublicationCriticalpatent/AT214369B/de