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.А. ТравниковfiledCriticalВ.А. Травников
Priority to SU101198ApriorityCriticalpatent/SU28259A1/ru
Application grantedgrantedCritical
Publication of SU28259A1publicationCriticalpatent/SU28259A1/ru