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 Kazakhsk Polt InstfiledCriticalKazakhsk Polt Inst
Priority to SU782647559ApriorityCriticalpatent/SU761395A2/en
Application grantedgrantedCritical
Publication of SU761395A2publicationCriticalpatent/SU761395A2/en