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发明名称
Lower pull tube adapter
摘要
A lower pull tube adapter has an enlarged body portion and an enlarged seal surface so that one size pull tube adapter may be used for a wide range of reciprocating downhole well pumps of different sizes and types.
申请公布号
US2004012200(A1)
申请公布日期
2004.01.22
申请号
US20020201223
申请日期
2002.07.22
申请人
SKILLMAN MILTON
发明人
SKILLMAN MILTON
分类号
E21B17/00;E21B43/12;F04B47/02;(IPC1-7):F16L25/00
主分类号
E21B17/00
代理机构
代理人
主权项
地址
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