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发明名称
TUNNEL BORING MACHINE WITH A CENTRE DRILLING DEVICE
摘要
<p>he invention concerns a tunneling machine for boring a tunnel, with a shield that. can be driven into the soil/rock and in which disc roller cutter or ripper etc., is arranged.</p>
申请公布号
CA2727949(A1)
申请公布日期
2012.07.24
申请号
CA20112727949
申请日期
2011.01.24
申请人
WANG, XIAOJUAN
发明人
WANG, XIAOJUAN
分类号
E21D9/08
主分类号
E21D9/08
代理机构
代理人
主权项
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