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Application filed by В.Г. Евреинов, А.В. ЗайковскийfiledCriticalВ.Г. Евреинов
Priority to SU77074ApriorityCriticalpatent/SU1847A1/ru
Application grantedgrantedCritical
Publication of SU1847A1publicationCriticalpatent/SU1847A1/ru