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发明名称
METHOD OF SUPPORTINGLY LINING CORRIDOR TYPE EXCAVATIONS AND TUNNELS
摘要
申请公布号
PL132499(B1)
申请公布日期
1985.03.30
申请号
PL19830240709
申请日期
1983.02.17
申请人
发明人
分类号
E21D;E21D11/14;(IPC1-7):E21D11/14
主分类号
E21D
代理机构
代理人
主权项
地址
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