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发明名称
PROPULSION SYSTEM OF TUNNEL BORING SHIELDS
摘要
申请公布号
GB1545879(A)
申请公布日期
1979.05.16
申请号
GB19760011370
申请日期
1976.03.22
申请人
MARCON INT LTD
发明人
分类号
E21D9/06;(IPC1-7):E21D9/06
主分类号
E21D9/06
代理机构
代理人
主权项
地址
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