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发明名称
Tunnel unit
摘要
申请公布号
GB2248252(B)
申请公布日期
1994.09.07
申请号
GB19910019146
申请日期
1991.09.06
申请人
MARTIN PETER * LEWIS
发明人
MARTIN PETER * LEWIS
分类号
E01B19/00;E02D29/05;(IPC1-7):E21D10/00
主分类号
E01B19/00
代理机构
代理人
主权项
地址
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