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. ФабрициевfiledCriticalБ.В. Фабрициев
Priority to SU1049ApriorityCriticalpatent/SU71302A2/ru
Application grantedgrantedCritical
Publication of SU71302A2publicationCriticalpatent/SU71302A2/ru