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Application filed by Jevgenij J Fedosejev, Ifor N Jachontov, Boris I Ananskij, Jakov L Pekarskij, Semjon E KisinevskijfiledCriticalJevgenij J Fedosejev
Publication of CS737481A1publicationCriticalpatent/CS737481A1/en
Publication of CS237981B1publicationCriticalpatent/CS237981B1/en