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Application filed by А. М. Алексеев, К. Д. Коньков , Р. В. ЧесноковаfiledCriticalА. М. Алексеев, К. Д. Коньков , Р. В. Чеснокова
Priority to SU1319158ApriorityCriticalpatent/SU309730A1/ru
Application grantedgrantedCritical
Publication of SU309730A1publicationCriticalpatent/SU309730A1/ru