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. Вул, И.М. ГольдманfiledCriticalВ.М. Вул
Priority to SU643ApriorityCriticalpatent/SU66065A1/ru
Application grantedgrantedCritical
Publication of SU66065A1publicationCriticalpatent/SU66065A1/ru