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. АбрамовичfiledCriticalВ.А. Абрамович
Priority to SU106907ApriorityCriticalpatent/SU31754A1/ru
Application grantedgrantedCritical
Publication of SU31754A1publicationCriticalpatent/SU31754A1/ru