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发明名称
PROBE FOR TESTING DEGASSING HOLES MADE IN DEPOSITS OF MINERALS
摘要
申请公布号
PL152376(B1)
申请公布日期
1990.12.31
申请号
PL19860259463
申请日期
1986.05.13
申请人
发明人
分类号
E21F7/00;(IPC1-7):E21F7/00
主分类号
E21F7/00
代理机构
代理人
主权项
地址
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