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Application filed by Bozhidar N Krapchev, Ivan V Poperechnojj, Konstantin L Krakhtov, Stojan S Dosev, Simeon P MonchevfiledCriticalBozhidar N Krapchev
Priority to BG8201487ApriorityCriticalpatent/BG44813A1/xx
Publication of BG44813A1publicationCriticalpatent/BG44813A1/xx