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Publication of SU373938A1publicationCriticalpatent/SU373938A1/ru
Publication of SU385435A1publicationCriticalpatent/SU385435A1/ru
Publication of SU364160A1publicationCriticalpatent/SU364160A1/ru
Publication of SU374816A1publicationCriticalpatent/SU374816A1/ru
Publication of SU384230A1publicationCriticalpatent/SU384230A1/ru
Application filed by К.П. ГеоргиевскийfiledCriticalК.П. Георгиевский
Priority to SU1209ApriorityCriticalpatent/SU16936A1/ru
Application grantedgrantedCritical
Publication of SU16936A1publicationCriticalpatent/SU16936A1/ru