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Application filed by А.Н. Михайлов, В.Г. Феденюк, Н.В. ЧерновfiledCriticalА.Н. Михайлов
Priority to SU380073ApriorityCriticalpatent/SU79412A1/en
Application grantedgrantedCritical
Publication of SU79412A1publicationCriticalpatent/SU79412A1/en