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发明名称
Oil well pump with diluent delivery means
摘要
申请公布号
US2764940(A)
申请公布日期
1956.10.02
申请号
US19530370543
申请日期
1953.07.27
申请人
EMSCO MANUFACTURING COMPANY
发明人
LONG JOHN A.
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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