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.Н. Солодушенков, Е.А. ШиловfiledCriticalС.Н. Солодушенков
Priority to SU30640ApriorityCriticalpatent/SU63637A1/ru
Application grantedgrantedCritical
Publication of SU63637A1publicationCriticalpatent/SU63637A1/ru