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经营范围
发明名称
Pumping apparatus
摘要
申请公布号
US2580332(A)
申请公布日期
1951.12.25
申请号
US19510211366
申请日期
1951.02.16
申请人
TEETOR DON H
发明人
TEETOR DON H.
分类号
E21B43/12
主分类号
E21B43/12
代理机构
代理人
主权项
地址
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