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.П. СелезневfiledCriticalА.П. Селезнев
Priority to SU112588ApriorityCriticalpatent/SU32058A1/ru
Application grantedgrantedCritical
Publication of SU32058A1publicationCriticalpatent/SU32058A1/ru