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经营范围
发明名称
EARTH DRILL
摘要
申请公布号
JPH07102869(A)
申请公布日期
1995.04.18
申请号
JP19930248406
申请日期
1993.10.05
申请人
MITSUBISHI CONSTR CO LTD
发明人
MIZUTANI YUICHIRO
分类号
E21B11/00;E02D17/13;E02F5/02;(IPC1-7):E21B11/00
主分类号
E21B11/00
代理机构
代理人
主权项
地址
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