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发明名称
Pumping unit
摘要
申请公布号
US3230782(A)
申请公布日期
1966.01.25
申请号
US19630324713
申请日期
1963.11.19
申请人
MONSANTO COMPANY
发明人
HARRYMAN PAUL D.;OAKES DAVID T.
分类号
E21B43/12
主分类号
E21B43/12
代理机构
代理人
主权项
地址
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