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 Alekseev Yurij NfiledCriticalAlekseev Yurij N
Priority to SU772505387ApriorityCriticalpatent/SU672227A1/en
Application grantedgrantedCritical
Publication of SU672227A1publicationCriticalpatent/SU672227A1/en