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发明名称
Apparatus and method for controlling the path of a mining machine along a mine face
摘要
申请公布号
US3365234(A)
申请公布日期
1968.01.23
申请号
US19660532800
申请日期
1966.03.08
申请人
GEWERKSCHAFT EISENHUTTE WESTFALIA
发明人
HEYER WILLY;POLLITZ VIKTOR
分类号
E21C27/18
主分类号
E21C27/18
代理机构
代理人
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