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 Б.В. Люльев, Н.В. СоломинfiledCriticalБ.В. Люльев
Priority to SU5729ApriorityCriticalpatent/SU73429A1/ru
Application grantedgrantedCritical
Publication of SU73429A1publicationCriticalpatent/SU73429A1/ru