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 Aleksandra A GulyaevafiledCriticalAleksandra A Gulyaeva
Priority to SU914925166ApriorityCriticalpatent/RU1769930C/en
Application grantedgrantedCritical
Publication of RU1769930CpublicationCriticalpatent/RU1769930C/en