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经营范围
发明名称
TUNNELLING SHIELD
摘要
申请公布号
GB8421790(D0)
申请公布日期
1984.10.03
申请号
GB19840021790
申请日期
1984.08.29
申请人
FAIRBLADE LTD
发明人
分类号
E21D9/06
主分类号
E21D9/06
代理机构
代理人
主权项
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