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.М. ДоронинfiledCriticalВ.М. Доронин
Priority to SU5421ApriorityCriticalpatent/SU75320A1/ru
Application grantedgrantedCritical
Publication of SU75320A1publicationCriticalpatent/SU75320A1/ru