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Publication date
Application filed by В.Г. ШиршовfiledCriticalВ.Г. Ширшов
Priority to SU2553960/06ApriorityCriticalpatent/RU705824C/en
Priority claimed from SU2553960/06Aexternal-prioritypatent/RU705824C/en
Application grantedgrantedCritical
Publication of SU705824A1publicationCriticalpatent/SU705824A1/en
Publication of RU705824CpublicationCriticalpatent/RU705824C/en