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发明名称
Pumping power
摘要
申请公布号
US2208590(A)
申请公布日期
1940.07.23
申请号
US19380247996
申请日期
1938.12.27
申请人
LEONARD
发明人
LEONARD ROY E.;GEARING HARRY
分类号
F04B47/02
主分类号
F04B47/02
代理机构
代理人
主权项
地址
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