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发明名称
MINE ROOF SUPPORT BAR ASSEMBLIES
摘要
申请公布号
GB1363003(A)
申请公布日期
1974.08.14
申请号
GB19710041875
申请日期
1971.09.08
申请人
GEWERKSCHAFT EISENHUTTE WESTFALIA
发明人
分类号
E21D17/02;E21D17/03;(IPC1-7):E21D17/08
主分类号
E21D17/02
代理机构
代理人
主权项
地址
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