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 Б.Я. ГоровойfiledCriticalБ.Я. Горовой
Priority to SU388730ApriorityCriticalpatent/SU75866A1/en
Application grantedgrantedCritical
Publication of SU75866A1publicationCriticalpatent/SU75866A1/en