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Application filed by Dragomir I Kolev, Romeo V Calta, Todor I Dragiev, Ignat N Ignatov, Mikhail N Angelov, Vladimir I KolevfiledCriticalDragomir I Kolev
Priority to BG8283888ApriorityCriticalpatent/BG45265A1/xx
Publication of BG45265A1publicationCriticalpatent/BG45265A1/xx