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 В.А. Матвеев, М.А. МатвеевfiledCriticalВ.А. Матвеев
Priority to SU11063ApriorityCriticalpatent/SU75565A2/ru
Application grantedgrantedCritical
Publication of SU75565A2publicationCriticalpatent/SU75565A2/ru