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Application filed by Polezhaev Viktor F, Bakhchevanov Fedor A, Gerdt Villi K, Isakov Nikolaj P, Pedro Kherbert YufiledCriticalPolezhaev Viktor F
Priority to SU762425778ApriorityCriticalpatent/SU662399A1/ru
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Publication of SU662399A1publicationCriticalpatent/SU662399A1/ru