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Application filed by В.Ф. Слесаренко, М.И. ЧеркезовfiledCriticalВ.Ф. Слесаренко
Priority to SU62971ApriorityCriticalpatent/SU22857A1/ru
Application grantedgrantedCritical
Publication of SU22857A1publicationCriticalpatent/SU22857A1/ru