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Publication of SU396879A1publicationCriticalpatent/SU396879A1/ru
Application filed by А.А. ДенисовfiledCriticalА.А. Денисов
Priority to SU4991ApriorityCriticalpatent/SU16797A1/en
Application grantedgrantedCritical
Publication of SU16797A1publicationCriticalpatent/SU16797A1/en