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 filedfiledCritical
Priority to SU1773077ApriorityCriticalpatent/SU414169A1/ru
Application grantedgrantedCritical
Publication of SU414169A1publicationCriticalpatent/SU414169A1/ru