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 О.Н. Григорьев, А.В. МарковичfiledCriticalО.Н. Григорьев
Priority to SU195394ApriorityCriticalpatent/SU50106A1/ru
Application grantedgrantedCritical
Publication of SU50106A1publicationCriticalpatent/SU50106A1/ru