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发明名称
METHOD OF LOCK BOLT FIXING CONSTRUCTION IN METHOD OF NATM CONSTRUCTION OF TUNNEL
摘要
申请公布号
JPS6389800(A)
申请公布日期
1988.04.20
申请号
JP19860233498
申请日期
1986.10.01
申请人
HOKUETSU METAL KK
发明人
KOBAYASHI MITSUO;YOSHIDA SUMIO
分类号
E21D20/00
主分类号
E21D20/00
代理机构
代理人
主权项
地址
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