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 Нижнетагильский металлургический комбинатfiledCriticalНижнетагильский металлургический комбинат
Priority to SU904888258ApriorityCriticalpatent/RU1804487C/en
Application grantedgrantedCritical
Publication of RU1804487CpublicationCriticalpatent/RU1804487C/en