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.Г. ЕвреиновfiledCriticalВ.Г. Евреинов
Priority to SU131158ApriorityCriticalpatent/SU38134A1/en
Application grantedgrantedCritical
Publication of SU38134A1publicationCriticalpatent/SU38134A1/en