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发明名称
Screw type pump
摘要
申请公布号
US2744465(A)
申请公布日期
1956.05.08
申请号
US19520319316
申请日期
1952.11.07
申请人
SPRINGER FREDERICK H
发明人
SPRINGER FREDERICK H.
分类号
F04D3/02
主分类号
F04D3/02
代理机构
代理人
主权项
地址
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