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经营范围
发明名称
MINE ROOF SUPPORT
摘要
申请公布号
GB2093102(B)
申请公布日期
1984.06.20
申请号
GB19820002130
申请日期
1982.01.26
申请人
FLETCHER SUTCLIFFE WILD LTD
发明人
分类号
E21D23/00;E21D23/04;E21D23/08;(IPC1-7):E21D23/04
主分类号
E21D23/00
代理机构
代理人
主权项
地址
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