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发明名称
EXCAVATOR FOR REVERSE CONSTRUCTION METHOD
摘要
申请公布号
JPH02304194(A)
申请公布日期
1990.12.17
申请号
JP19890125193
申请日期
1989.05.18
申请人
MITSUBISHI KENSETSU KK
发明人
MIZUTANI YUICHIRO
分类号
E21B4/18;E21B7/28;E21B17/07
主分类号
E21B4/18
代理机构
代理人
主权项
地址
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