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发明名称
TUNNELLING MACHINES
摘要
申请公布号
GB8625782(D0)
申请公布日期
1986.12.03
申请号
GB19860025782
申请日期
1986.10.28
申请人
PENTITH, G R O
发明人
分类号
E21C25/16;E21C27/10;E21C41/18;E21D9/10
主分类号
E21C25/16
代理机构
代理人
主权项
地址
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