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 Д.К. АфанасьевfiledCriticalД.К. Афанасьев
Priority to SU135703ApriorityCriticalpatent/SU34144A1/en
Application grantedgrantedCritical
Publication of SU34144A1publicationCriticalpatent/SU34144A1/en