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发明名称
SMALL-DIAMETER TUNNEL EXCAVATION
摘要
申请公布号
JPS57140496(A)
申请公布日期
1982.08.31
申请号
JP19810025530
申请日期
1981.02.25
申请人
NIPPON DENSHIN DENWA KOSHA
发明人
NOMURA YOSHIHIKO;ARIOKA RIYOUSUKE;MORI SUMIO
分类号
E21D9/10;E21D11/00
主分类号
E21D9/10
代理机构
代理人
主权项
地址
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