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. СорокинfiledCriticalВ.А. Сорокин
Priority to SU379368ApriorityCriticalpatent/SU75207A1/en
Application grantedgrantedCritical
Publication of SU75207A1publicationCriticalpatent/SU75207A1/en