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经营范围
发明名称
A mining or tunnelling device
摘要
申请公布号
GB2401623(B)
申请公布日期
2006.06.21
申请号
GB20040013646
申请日期
2003.02.04
申请人
DBT GMBH
发明人
WILLIAM HOGG
分类号
E21B7/24;E21C25/08;E21C25/16;E21C27/00;E21C31/00;E21D9/11;F16H3/70;F16H57/023
主分类号
E21B7/24
代理机构
代理人
主权项
地址
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