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Application filed by Ivan G Petrov, Viktor I Orlinov, Steva Cvetanka S Kr, Bozhidar G Goranchev, Zhivko G Zhelev, Khrab R P BozhilovfiledCriticalIvan G Petrov
Priority to BG8279688ApriorityCriticalpatent/BG45082A1/xx
Publication of BG45082A1publicationCriticalpatent/BG45082A1/xx