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. РыбинfiledCriticalВ.Г. Рыбин
Priority to SU163993ApriorityCriticalpatent/SU44772A1/en
Application grantedgrantedCritical
Publication of SU44772A1publicationCriticalpatent/SU44772A1/en