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.И. АнтипинfiledCriticalВ.И. Антипин
Priority to SU78375ApriorityCriticalpatent/SU30259A1/en
Application grantedgrantedCritical
Publication of SU30259A1publicationCriticalpatent/SU30259A1/en