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Application filed by Ivajjlo D Popov, Dimit R P Petkov, Nikolajj D Lazarov, Emil S Arsov, Aleksand R K Vuchkov, Vesko Kh Gocev, Valentina R StanchevafiledCriticalIvajjlo D Popov
Priority to BG8214287ApriorityCriticalpatent/BG44738A1/xx
Publication of BG44738A1publicationCriticalpatent/BG44738A1/xx