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Application filed by И.А. Лукьянов, нов И.А. ЛукьfiledCriticalИ.А. Лукьянов
Priority to SU32ApriorityCriticalpatent/SU72306A1/ru
Application grantedgrantedCritical
Publication of SU72306A1publicationCriticalpatent/SU72306A1/ru