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发明名称
DRILLING METHOD FOR SHAFT OF LARGE DEPTH AND DEVICE THEREOF
摘要
申请公布号
JPH1096389(A)
申请公布日期
1998.04.14
申请号
JP19960271302
申请日期
1996.09.24
申请人
NIPPON STEEL CORP;TEISEKI SAKUSEI KOGYO KK
发明人
NOZAKI KEITA;YOSHIWAKA HIDEHIKO;FUSHIDA TAKASHI;ISHIBASHI YOICHI;ONO SHIKARI
分类号
E21D1/03;E21D5/01;(IPC1-7):E21D1/03
主分类号
E21D1/03
代理机构
代理人
主权项
地址
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