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.М. ЕвстюговfiledCriticalВ.М. Евстюгов
Priority to SU44266ApriorityCriticalpatent/SU13855A1/ru
Application grantedgrantedCritical
Publication of SU13855A1publicationCriticalpatent/SU13855A1/ru