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 Р.Я. ЗахаркинfiledCriticalР.Я. Захаркин
Priority to SU2342892/07ApriorityCriticalpatent/SU571174A1/en
Application grantedgrantedCritical
Publication of SU571174A1publicationCriticalpatent/SU571174A1/en