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 SteindlfiledCriticalFranz Steindl
Priority to AT415661ApriorityCriticalpatent/AT225905B/de
Priority to DE1962ST014725prioritypatent/DE1859793U/de
Application grantedgrantedCritical
Publication of AT225905BpublicationCriticalpatent/AT225905B/de