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 Н.Е. Кириченко, Б.Д. МельникfiledCriticalН.Е. Кириченко
Priority to SU397519ApriorityCriticalpatent/SU81706A1/ru
Application grantedgrantedCritical
Publication of SU81706A1publicationCriticalpatent/SU81706A1/ru