申请人 |
MITSUBISHI MINING & CEMENT CO., LTD.;KINPO DENKI K.K., TOKIO/TOKYO, JP |
发明人 |
SASAKI, MITSUBISHI, HIROSHI C/O OHMIYA KENKYUJO, FUKUROMACHI OHMIYA-SHI SAITAMA-KEN, JP;OHTA, SABURO, TOKYO, JP;KANESAKA, SEN-ICHI, AKISHIMA-SHI TOKYO, JP;HIROTA, TAKAO, TOKYO, JP |