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.Н. ПономаревfiledCriticalВ.Н. Пономарев
Priority to SU51828ApriorityCriticalpatent/SU14860A1/en
Application grantedgrantedCritical
Publication of SU14860A1publicationCriticalpatent/SU14860A1/en