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发明名称
EXCAVATING DEVICE
摘要
申请公布号
JPH07217360(A)
申请公布日期
1995.08.15
申请号
JP19940010130
申请日期
1994.01.31
申请人
MITSUBISHI MATERIALS CORP
发明人
KODERA SATOSHI;SABURI AKIHIRO
分类号
E21B10/06;E21B10/16;E21B17/14;(IPC1-7):E21B17/14
主分类号
E21B10/06
代理机构
代理人
主权项
地址
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