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发明名称
Fan wheel
摘要
申请公布号
US2212041(A)
申请公布日期
1940.08.20
申请号
US19390278045
申请日期
1939.06.08
申请人
IIG ELECTRIC VENTILATING COMPANY
发明人
PFAUTSCH RAYMOND V.
分类号
F04D29/38
主分类号
F04D29/38
代理机构
代理人
主权项
地址
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