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 С.А. ЕгоровfiledCriticalС.А. Егоров
Priority to SU374238ApriorityCriticalpatent/SU73900A2/ru
Application grantedgrantedCritical
Publication of SU73900A2publicationCriticalpatent/SU73900A2/ru