申请人 |
NISSHIN STEEL CO., LTD.;NIPPON TUNGSTEN CO., LTD.;KUROBE, JUN;ASADA, HIROSHI;MATSUBARA, SHIGEO;TERAMOTO, SHUICHI;MUKAE, SHINGO;SAKAGUCHI, SHIGEYA;MATSUO, SHIGERU |
发明人 |
KUROBE, JUN;ASADA, HIROSHI;MATSUBARA, SHIGEO;TERAMOTO, SHUICHI;MUKAE, SHINGO;SAKAGUCHI, SHIGEYA;MATSUO, SHIGERU |