| 申请人 |
OSAKA GAS CO LTD;NKK CORP;JAPAN STEEL & TUBE CONSTR CO LTD;HITACHI VIA MECHANICS LTD |
发明人 |
HARA YUJI;OHASHI TAKAHIKO;NAKAMURA RYUICHI;FUKUSHIMA YOICHIRO;KURODA TAKASHI;KANAYAMA KIYOSHI;YAHAGI ISAMU;KAWAZOE HISANORI;TAMAOKI HIROYUKI;WATANABE KAZUYOSHI;SHINADA TSUNEO |
