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发明名称
Hydraulic pneumatic well pumping apparatus
摘要
申请公布号
US3058307(A)
申请公布日期
1962.10.16
申请号
US19600052737
申请日期
1960.08.29
申请人
PNEU-HY CO.
发明人
SMITH SAMUEL V.
分类号
F04B9/10;F04C14/00
主分类号
F04B9/10
代理机构
代理人
主权项
地址
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