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发明名称
Bailer
摘要
申请公布号
US2170354(A)
申请公布日期
1939.08.22
申请号
US19370173466
申请日期
1937.11.08
申请人
PHILLIPS PETROLEUM COMPANY
发明人
STEPHENS JAMES P.;HAMILTON THOMAS J.
分类号
E21B27/00
主分类号
E21B27/00
代理机构
代理人
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