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发明名称
Diffusion pump
摘要
申请公布号
US2386299(A)
申请公布日期
1945.10.09
申请号
US19440543289
申请日期
1944.07.03
申请人
NATIONAL RESEARCH CORPORATION
发明人
DOWNING JAMES R. O.
分类号
F04F9/00
主分类号
F04F9/00
代理机构
代理人
主权项
地址
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