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Publication of SU10495A1publicationCriticalpatent/SU10495A1/ru
Application filed by Н.А. ЗайцевfiledCriticalН.А. Зайцев
Priority to SU17700ApriorityCriticalpatent/SU55845A1/ru
Publication of SU55845A1publicationCriticalpatent/SU55845A1/ru