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发明名称
Improvements in and relating to ventilating apparatus
摘要
申请公布号
GB520641(A)
申请公布日期
1940.04.30
申请号
GB19380030959
申请日期
1938.10.26
申请人
ALEXANDER REGINALD YOUNGER
发明人
分类号
F24F7/08
主分类号
F24F7/08
代理机构
代理人
主权项
地址
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