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Application filed by М.Г. Отьян, н М.Г. ОтьfiledCriticalМ.Г. Отьян
Priority to SU375859ApriorityCriticalpatent/SU76457A1/en
Application grantedgrantedCritical
Publication of SU76457A1publicationCriticalpatent/SU76457A1/en