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 Lev M Rojz, Michail M Petuchov, Arkadij I KaganskijfiledCriticalLev M Rojz
Priority to CS831425ApriorityCriticalpatent/CS260001B1/en
Publication of CS142583A1publicationCriticalpatent/CS142583A1/en
Publication of CS260001B1publicationCriticalpatent/CS260001B1/en