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Application filed by Pencho D Lesidrenski, Emil P Popov, Khristo V Simeonov, Aleksand R G Arsov, Khristo P Popov, Ivan N Gruev, Teodorina P Mileva, Miroslava N KunchevafiledCriticalPencho D Lesidrenski
Priority to BG8119687ApriorityCriticalpatent/BG44590A1/xx
Publication of BG44590A1publicationCriticalpatent/BG44590A1/xx