BG45252
KOLEV,NIKOLAJJ N.,BG, SEMKOV,KRUM A.,BG, DARAKCHIEV,RUMEN D.,BG, NAKOV,SVETOSLAV C.,BG
Year of Publication 15.05.1989
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Year of Publication 15.05.1989
Patent
BG44941
KOLEV,NIKOLAJJ N.,BG, JJOVCHEV,KAMEN A.,BG, BASHOVSKI,VLADIMIR T.,BG, SEMKOV,KRUM A.,BG, DARAKCHIEV,RUMEN D.,BG
Year of Publication 15.03.1989
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Year of Publication 15.03.1989
Patent
BG44653
KOLEV,NIKOLAJJ N.,BG, BROZ,ZDENEK,CS, STANEK,VLADIMIR,CS, CERVENKA,JAN,CS, SEMKOV,KRUM A.,BG, DARAKCHIEV,RUMEN D.,BG
Year of Publication 16.01.1989
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Year of Publication 16.01.1989
Patent