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发明名称
Improvements relating to fans
摘要
申请公布号
GB638058(A)
申请公布日期
1950.05.31
申请号
GB19480016912
申请日期
1948.06.23
申请人
BERT LEE
发明人
分类号
F04D29/28
主分类号
F04D29/28
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代理人
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