申请人 |
UKRAINIAN SCIENTIFIC-RESEARCH, PROJECT-DESIGN, AND TECHNOLOGICAL INSTITUTE OF EXPLOSION-PROOF AND MINE ELECTRICAL EQUIPMENT, WITH EXPERIMENTAL WORKS |
发明人 |
BOIKO IVAN HRYHOROVYCH;TKACHUK MYKOLA MYKOLAIOVYCH;OMELCHENKO OLEKSANDR MYKOLAIOVYCH;TKACHUK OLEKSANDR MYKOLAIOVYCH |