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Application filed by Vladimir N Kotrochov, Anatolij M Sor, Vladimir G Raskatov, Vasilij A Chvostov, Nikolaj F Didenko, Eduard S Rejngart, Lev I LevcukfiledCriticalVladimir N Kotrochov
Priority to CS812581ApriorityCriticalpatent/CS233332B1/en
Publication of CS258181A1publicationCriticalpatent/CS258181A1/en
Publication of CS233332B1publicationCriticalpatent/CS233332B1/en