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 Tungsram ReszvenytarsasagfiledCriticalTungsram Reszvenytarsasag
Priority to HU3884ApriorityCriticalpatent/HUT35876A/hu
Priority to AT212984Aprioritypatent/AT392370B/de
Publication of HUT35876ApublicationCriticalpatent/HUT35876A/hu