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Application filed by Vlchev Vladimir I, Dancho T Tonchev, Dimit R R Dimitrov, Nikolajj P Simeonov, Ivan A Ivanov, Atanas I SavovfiledCriticalVlchev Vladimir I
Priority to BG7667586ApriorityCriticalpatent/BG43640A1/en
Publication of BG43640A1publicationCriticalpatent/BG43640A1/en