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 Е.В. Нетин-НетунатинfiledCriticalЕ.В. Нетин-Нетунатин
Priority to SU72249ApriorityCriticalpatent/SU31070A1/ru
Application grantedgrantedCritical
Publication of SU31070A1publicationCriticalpatent/SU31070A1/ru