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发明名称
Gas leak detector for well casing
摘要
申请公布号
US2757533(A)
申请公布日期
1956.08.07
申请号
US19510203879
申请日期
1951.01.02
申请人
PHILLIPS PETROLEUM COMPANY
发明人
WILEY BRUCE F.
分类号
E21B47/10
主分类号
E21B47/10
代理机构
代理人
主权项
地址
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