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.А. КоршуновfiledCriticalЕ.А. Коршунов
Priority to SU2993524/02ApriorityCriticalpatent/SU875715A1/en
Application grantedgrantedCritical
Publication of SU875715A1publicationCriticalpatent/SU875715A1/en