申请人 |
LEAD AND ZINC COMPLEX, PEC;LESIDRENSKI, PENCHO;GRUEV, IVAN;NIKOLOV, NIKOLA;APOSTOLOV, ATANAS;STOYANOVA, SLAVEYA;PETROV, NIKOLA;GROZEV, ANGEL;ALEXANDROV, TSVETAN |
发明人 |
LESIDRENSKI, PENCHO;GRUEV, IVAN;NIKOLOV, NIKOLA;APOSTOLOV, ATANAS;STOYANOVA, SLAVEYA;PETROV, NIKOLA;GROZEV, ANGEL;ALEXANDROV, TSVETAN |