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 Тюменский индустриальный институтfiledCriticalТюменский индустриальный институт
Priority to SU762344282ApriorityCriticalpatent/SU649890A1/en
Application grantedgrantedCritical
Publication of SU649890A1publicationCriticalpatent/SU649890A1/en