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 А.И. ВолковfiledCriticalА.И. Волков
Priority to SU3786021/27ApriorityCriticalpatent/SU1223536A2/ru
Application grantedgrantedCritical
Publication of SU1223536A2publicationCriticalpatent/SU1223536A2/ru