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 В.О. ПоповfiledCriticalВ.О. Попов
Priority to SU11685ApriorityCriticalpatent/SU12609A1/en
Application grantedgrantedCritical
Publication of SU12609A1publicationCriticalpatent/SU12609A1/en