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 Bezak Andrej, Jan Ing MatysovskyfiledCriticalBezak Andrej
Priority to CS851672ApriorityCriticalpatent/CS252719B1/en
Publication of CS167285A1publicationCriticalpatent/CS167285A1/en
Publication of CS252719B1publicationCriticalpatent/CS252719B1/en