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发明名称
Well pumping system
摘要
申请公布号
US2451168(A)
申请公布日期
1948.10.12
申请号
US19430497227
申请日期
1943.08.03
申请人
LAUMAN HERMAN E
发明人
LAUMAN HERMAN E.
分类号
F04D13/10
主分类号
F04D13/10
代理机构
代理人
主权项
地址
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