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发明名称
Casing pump assembly
摘要
申请公布号
US2247325(A)
申请公布日期
1941.06.24
申请号
US19400351529
申请日期
1940.08.05
申请人
WAGNER CARL D
发明人
WAGNER CARL D.
分类号
F04B53/14
主分类号
F04B53/14
代理机构
代理人
主权项
地址
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