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Application filed by Х.С. Топоровская, Х.С. ТопоровскаfiledCriticalХ.С. Топоровская
Priority to SU4729ApriorityCriticalpatent/SU69180A1/en
Application grantedgrantedCritical
Publication of SU69180A1publicationCriticalpatent/SU69180A1/en