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发明名称
DRILL HOLE AND UNDERGROUND RESISTIVITY METHOD
摘要
申请公布号
CA484494(A)
申请公布日期
1952.07.01
申请号
CAD484494
申请日期
申请人
GEOPHYSICAL EXPLORATION COMPANY
发明人
ARTHUR A. BRANT
分类号
主分类号
代理机构
代理人
主权项
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