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 С.М. ЧусовfiledCriticalС.М. Чусов
Priority to SU2765ApriorityCriticalpatent/SU1977A3/ru
Application grantedgrantedCritical
Publication of SU1977A3publicationCriticalpatent/SU1977A3/ru