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发明名称
Pumping means for oil wells
摘要
申请公布号
US2088892(A)
申请公布日期
1937.08.03
申请号
US19360094662
申请日期
1936.08.06
申请人
CARTER EARL H
发明人
CARTER EARL H.
分类号
F04F1/06
主分类号
F04F1/06
代理机构
代理人
主权项
地址
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