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 И.Ф. ЧистовfiledCriticalИ.Ф. Чистов
Priority to SU24162ApriorityCriticalpatent/SU19624A1/ru
Application grantedgrantedCritical
Publication of SU19624A1publicationCriticalpatent/SU19624A1/ru