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 А.В. КонновfiledCriticalА.В. Коннов
Priority to SU0286ApriorityCriticalpatent/SU65862A1/ru
Application grantedgrantedCritical
Publication of SU65862A1publicationCriticalpatent/SU65862A1/ru