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发明名称
Pump structure
摘要
申请公布号
US2238809(A)
申请公布日期
1941.04.15
申请号
US19390292480
申请日期
1939.08.29
申请人
DAVID L. HOPE
发明人
HALL NORMAN G.;PARRISH GRANT L.
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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