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 А.А. ПещеровfiledCriticalА.А. Пещеров
Priority to SU4000ApriorityCriticalpatent/SU65822A1/ru
Application grantedgrantedCritical
Publication of SU65822A1publicationCriticalpatent/SU65822A1/ru