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发明名称
BORING TYPE MINING MACHINE
摘要
申请公布号
GB2077814(A)
申请公布日期
1981.12.23
申请号
GB19810016962
申请日期
1981.06.03
申请人
NATIONAL MINE SERVICE CO
发明人
分类号
E21C27/00;(IPC1-7):E21C27/00
主分类号
E21C27/00
代理机构
代理人
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地址
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