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发明名称
Differential pump
摘要
申请公布号
US2313302(A)
申请公布日期
1943.03.09
申请号
US19390272665
申请日期
1939.05.09
申请人
ANDRE SOBEK
发明人
SOBEK ANDRE
分类号
F04B7/00;F04B49/00
主分类号
F04B7/00
代理机构
代理人
主权项
地址
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