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.Д. МаковерfiledCriticalМ.Д. Маковер
Priority to SU54ApriorityCriticalpatent/SU69915A1/ru
Application grantedgrantedCritical
Publication of SU69915A1publicationCriticalpatent/SU69915A1/ru