申请人 |
OILFIELD EQUIPMENT DEVELOPMENT CENTER LIMITED;SAGALOVSKIIY, ANDREIY VLADIMIROVICH;SAGALOVSKIIY, VLADIMIR IOSIFOVICH;GMYZINA, OLGA NIKOLAEVNA;SHKAD, DMITRIIY ALEKSANDROVICH |
发明人 |
SAGALOVSKIIY, ANDREIY VLADIMIROVICH;SAGALOVSKIIY, VLADIMIR IOSIFOVICH;GMYZINA, OLGA NIKOLAEVNA;SHKAD, DMITRIIY ALEKSANDROVICH |