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Application filed by К.Ф. Землянников, нников К.Ф. ЗемлfiledCriticalК.Ф. Землянников
Priority to SU343501ApriorityCriticalpatent/SU77602A1/ru
Application grantedgrantedCritical
Publication of SU77602A1publicationCriticalpatent/SU77602A1/ru