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 В.В. ЧернышевfiledCriticalВ.В. Чернышев
Priority to SU37874ApriorityCriticalpatent/SU75308A1/ru
Application grantedgrantedCritical
Publication of SU75308A1publicationCriticalpatent/SU75308A1/ru