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发明名称
METHOD OF DRIVING TUNNELS AND PASSAGES LINED WITH PREFABRICATED UNITS AND PREFABRICATED UNIT FOR LINING TUNNELS AND PASSAGES
摘要
申请公布号
PL264201(A2)
申请公布日期
1988.02.04
申请号
PL19870264201
申请日期
1987.02.18
申请人
发明人
分类号
E21D;E21D9/04;E21D11/08;(IPC1-7):E21D/
主分类号
E21D
代理机构
代理人
主权项
地址
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