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发明名称
Method and apparatus for driving mine galleries
摘要
申请公布号
GB1013802(A)
申请公布日期
1965.12.22
申请号
GB19620029779
申请日期
1962.08.02
申请人
SAARBERGWERKE A.G.
发明人
分类号
E21D9/00
主分类号
E21D9/00
代理机构
代理人
主权项
地址
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