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.П. АлексеевfiledCriticalВ.П. Алексеев
Priority to SU3486ApriorityCriticalpatent/SU54541A1/ru
Application grantedgrantedCritical
Publication of SU54541A1publicationCriticalpatent/SU54541A1/ru