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.М. РусиновfiledCriticalМ.М. Русинов
Priority to SU129747ApriorityCriticalpatent/SU34784A1/ru
Application grantedgrantedCritical
Publication of SU34784A1publicationCriticalpatent/SU34784A1/ru