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发明名称
METHOD OF DETERMINING VIELDABILITY OF MINE SHAFT LINING
摘要
申请公布号
PL154002(B2)
申请公布日期
1991.06.28
申请号
PL19890279159
申请日期
1989.04.26
申请人
发明人
分类号
E21C;E21C39/00;E21D;G01B5/30;G01L1/00;G01N33/24;(IPC1-7):E21C39/00
主分类号
E21C
代理机构
代理人
主权项
地址
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