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发明名称
Well equipment
摘要
申请公布号
US2281899(A)
申请公布日期
1942.05.05
申请号
US19390265019
申请日期
1939.03.30
申请人
PHILLIPS PETROLEUM COMPANY
发明人
WHITE CHARLEY L.
分类号
F04B47/00
主分类号
F04B47/00
代理机构
代理人
主权项
地址
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