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 Е.Д. КочетковfiledCriticalЕ.Д. Кочетков
Priority to SU4073082/21ApriorityCriticalpatent/SU1367766A1/en
Application grantedgrantedCritical
Publication of SU1367766A1publicationCriticalpatent/SU1367766A1/en