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发明名称
MINE ROOF SUPPORT
摘要
申请公布号
AU529191(B2)
申请公布日期
1983.05.26
申请号
AU19790053202
申请日期
1979.11.27
申请人
FLETCHER SUTCLIFFE WILD LTD.
发明人
JOHN CAMBRIDGE SMITH
分类号
E21D23/00;E21D23/04;(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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