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 AT1167Dexternal-prioritypatent/AT1167B/de
Application filed by Adolphe Isidore Van VrieslandfiledCriticalAdolphe Isidore Van Vriesland
Application grantedgrantedCritical
Publication of AT1170BpublicationCriticalpatent/AT1170B/de