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Publication of SU247599A1publicationCriticalpatent/SU247599A1/ru
Application filed by С.А. ДмитриевfiledCriticalС.А. Дмитриев
Priority to SU122815ApriorityCriticalpatent/SU37459A1/ru
Application grantedgrantedCritical
Publication of SU37459A1publicationCriticalpatent/SU37459A1/ru