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 Челябинский Металлургический ИнститутfiledCriticalЧелябинский Металлургический Институт
Priority to SU741986945ApriorityCriticalpatent/SU636822A1/en
Application grantedgrantedCritical
Publication of SU636822A1publicationCriticalpatent/SU636822A1/en