申请人 |
HITACHI POWDERED METALS CO., LTD.;HITACHI CONSTRUCTION MACHINERY CO., LTD.;MIYASAKA, MOTOHIRO;MARUYAMA, KAZUO;MOGAMI, MICHIHARU;KOBAYASHI, JUNICHI;AKITA, HIDEKI;GOKITA, OSAMU |
发明人 |
MIYASAKA, MOTOHIRO;MARUYAMA, KAZUO;MOGAMI, MICHIHARU;KOBAYASHI, JUNICHI;AKITA, HIDEKI;GOKITA, OSAMU |