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Application filed by Petr S Pitman, Oleg V Kushnirenko, Aleksandr V Baranov, Serdyukov GennadijfiledCriticalPetr S Pitman
Priority to SU833658346ApriorityCriticalpatent/SU1146439A1/en
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Publication of SU1146439A1publicationCriticalpatent/SU1146439A1/en