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
Priority claimed from SU1469618Aexternal-prioritypatent/SU399131A1/ru
Priority claimed from DE19702032686external-prioritypatent/DE2032686A1/de
Application filedfiledCritical
Application grantedgrantedCritical
Publication of SU399131A3publicationCriticalpatent/SU399131A3/ru