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 М.Х. ВильнерfiledCriticalМ.Х. Вильнер
Priority to SU382352ApriorityCriticalpatent/SU74234A1/ru
Application grantedgrantedCritical
Publication of SU74234A1publicationCriticalpatent/SU74234A1/ru