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Publication of SU2562A1publicationCriticalpatent/SU2562A1/ru
Application filed by Е.Д. Осетрова, Г.В. ЧелинцевfiledCriticalЕ.Д. Осетрова
Priority to SU3229ApriorityCriticalpatent/SU59809A1/ru
Application grantedgrantedCritical
Publication of SU59809A1publicationCriticalpatent/SU59809A1/ru