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发明名称
EXCAVATION METHOD AND EXCAVATOR
摘要
申请公布号
JPH0972183(A)
申请公布日期
1997.03.18
申请号
JP19950226629
申请日期
1995.09.04
申请人
TAKEMOTO KISO KOJI KK
发明人
TAKEMOTO SHINICHI
分类号
E21B17/00;(IPC1-7):E21B17/00
主分类号
E21B17/00
代理机构
代理人
主权项
地址
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