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 Ludek Vins, Bohumir Prokop, Josef KuratkofiledCriticalLudek Vins
Priority to CS437778ApriorityCriticalpatent/CS194888B1/en
Publication of CS194888B1publicationCriticalpatent/CS194888B1/en