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Application filed by N G Karapetyan, I S Boshnyakov, K N Nazar, A S MargaryanfiledCriticalN G Karapetyan
Priority to SU671138008ApriorityCriticalpatent/SU227586A1/en
Application grantedgrantedCritical
Publication of SU227586A1publicationCriticalpatent/SU227586A1/en