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 П.Е. ЕгоровfiledCriticalП.Е. Егоров
Priority to SU61119ApriorityCriticalpatent/SU19544A1/ru
Application grantedgrantedCritical
Publication of SU19544A1publicationCriticalpatent/SU19544A1/ru