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发明名称
MINE ROOF SUPPORT UNIT
摘要
申请公布号
GB1599956(A)
申请公布日期
1981.10.07
申请号
GB19780014217
申请日期
1978.04.11
申请人
BOCHUMER EISENHUETTE HEINTZMANN GMBH & CO
发明人
分类号
E21D23/00;E21D23/08;(IPC1-7):E21D23/08
主分类号
E21D23/00
代理机构
代理人
主权项
地址
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