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 Otdel Materialno Tekhn SnabzhefiledCriticalOtdel Materialno Tekhn Snabzhe
Priority to SU904799288ApriorityCriticalpatent/RU1833756C/en
Application grantedgrantedCritical
Publication of RU1833756CpublicationCriticalpatent/RU1833756C/en