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 claimed from SU1207929Aexternal-prioritypatent/SU366605A3/ru
Application grantedgrantedCritical
Publication of SU363245A3publicationCriticalpatent/SU363245A3/ru