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 Franz GruberfiledCriticalFranz Gruber
Priority to AT99761ApriorityCriticalpatent/AT225999B/de
Application grantedgrantedCritical
Publication of AT225999BpublicationCriticalpatent/AT225999B/de