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发明名称
METHOD OF AND MEANS FOR SUPPORTING HANGING WALLS IN MINE WORKINGS
摘要
申请公布号
ZA7703222(B)
申请公布日期
1978.07.26
申请号
ZA19770003222
申请日期
1977.05.27
申请人
BOCHUMER EISENHUETTE HEINTZMANN & CO
发明人
SPIES K
分类号
E21D17/01;E21D17/06
主分类号
E21D17/01
代理机构
代理人
主权项
地址
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