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Application filed by А.Л. Загянский, нский А.Л. ЗагfiledCriticalА.Л. Загянский
Priority to SU5587ApriorityCriticalpatent/SU75250A1/en
Application grantedgrantedCritical
Publication of SU75250A1publicationCriticalpatent/SU75250A1/en