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 Lyudmila B Gvadybadze, Efim M BlyakhmanfiledCriticalLyudmila B Gvadybadze
Priority to SU762388244ApriorityCriticalpatent/SU648589A1/en
Application grantedgrantedCritical
Publication of SU648589A1publicationCriticalpatent/SU648589A1/en