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.Д. ПотаповfiledCriticalВ.Д. Потапов
Priority to SU111726ApriorityCriticalpatent/SU29482A1/ru
Application grantedgrantedCritical
Publication of SU29482A1publicationCriticalpatent/SU29482A1/ru