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发明名称
TUNNEL ENLARGING EXCAVATION METHOD
摘要
申请公布号
JPS61155591(A)
申请公布日期
1986.07.15
申请号
JP19840274494
申请日期
1984.12.28
申请人
MITSUI CONSTR CO LTD;KAJIMA CORP
发明人
TAKAHASHI YOSHIYUKI
分类号
E21D9/06
主分类号
E21D9/06
代理机构
代理人
主权项
地址
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