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 Gustav ZwierschuetzfiledCriticalGustav Zwierschuetz
Application grantedgrantedCritical
Publication of AT12793BpublicationCriticalpatent/AT12793B/de