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经营范围
发明名称
Well logging
摘要
申请公布号
US2876078(A)
申请公布日期
1959.03.03
申请号
US19540461857
申请日期
1954.10.12
申请人
NATIONAL LEAD COMPANY
发明人
MOORE PERNELL J.
分类号
E21B49/00
主分类号
E21B49/00
代理机构
代理人
主权项
地址
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