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 Valentin M Markin, Oleg A OstilovskijfiledCriticalValentin M Markin
Priority to CS844819ApriorityCriticalpatent/CS481984A1/en
Publication of CS481984A1publicationCriticalpatent/CS481984A1/en