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.)
Publication date
Priority to AT965DpriorityCriticalpatent/AT965B/de
Priority to AT4157Dprioritypatent/AT4157B/de
Application grantedgrantedCritical
Publication of AT249BpublicationCriticalpatent/AT249B/de