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发明名称
DOWNHOLE PUMP ASSEMBLY
摘要
申请公布号
GB9023450(D0)
申请公布日期
1990.12.12
申请号
GB19900023450
申请日期
1990.10.29
申请人
CAMERON, ANTONY D
发明人
分类号
E21B23/14;E21B43/12;F04D3/02;F04D13/10
主分类号
E21B23/14
代理机构
代理人
主权项
地址
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