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Application filed by Djanko B Djankov, Trifon A Trifonov, Slavcho S Zhechev, Jjordanka P Sejjmenova, Angel Jj Dimitrov, Docho Kh ShikovfiledCriticalDjanko B Djankov
Priority to BG7868887ApriorityCriticalpatent/BG44979A1/xx
Publication of BG44979A1publicationCriticalpatent/BG44979A1/xx