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发明名称
Prop suitable for use in mines
摘要
申请公布号
GB2165565(A)
申请公布日期
1986.04.16
申请号
GB19840025878
申请日期
1984.10.12
申请人
* DOWTY GROUP SERVICES LIMITED
发明人
PAUL * RADMALL
分类号
E21D15/44;(IPC1-7):E21D15/22
主分类号
E21D15/44
代理机构
代理人
主权项
地址
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