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 AT401Dexternal-prioritypatent/AT401B/de
Application filed by Josef HoenigsvaldfiledCriticalJosef Hoenigsvald
Application grantedgrantedCritical
Publication of AT620BpublicationCriticalpatent/AT620B/de