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 filedfiledCritical
Priority to HUPA001204priorityCriticalpatent/HU169244B/hu
Priority to CS749675Aprioritypatent/CS199602B2/cs
Priority to DD18940175Aprioritypatent/DD121297A5/xx
Publication of HU169244BpublicationCriticalpatent/HU169244B/hu