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Application filed by Ф.М. Максимов, Д.А. ШапошниковfiledCriticalФ.М. Максимов
Priority to SU96586ApriorityCriticalpatent/SU26616A1/ru
Application grantedgrantedCritical
Publication of SU26616A1publicationCriticalpatent/SU26616A1/ru