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经营范围
发明名称
Lining underground workings
摘要
申请公布号
GB2155977(A)
申请公布日期
1985.10.02
申请号
GB19850005725
申请日期
1985.03.06
申请人
* CARRS PAPER LIMITED
发明人
GRANVILLE FLETCHER * WILLIAMS
分类号
E21D23/03;E21F5/00;(IPC1-7):E21F5/00
主分类号
E21D23/03
代理机构
代理人
主权项
地址
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