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 SU1705450ApriorityCriticalpatent/SU411302A1/ru
Application grantedgrantedCritical
Publication of SU411302A1publicationCriticalpatent/SU411302A1/ru