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.Ф. ЯкимовfiledCriticalА.Ф. Якимов
Priority to SU373546ApriorityCriticalpatent/SU76350A1/ru
Application grantedgrantedCritical
Publication of SU76350A1publicationCriticalpatent/SU76350A1/ru