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Publication of SU63020A1publicationCriticalpatent/SU63020A1/ru
Application filed by Г.В. СоколовfiledCriticalГ.В. Соколов
Priority to SU2461ApriorityCriticalpatent/SU68180A1/ru
Publication of SU68180A1publicationCriticalpatent/SU68180A1/ru