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发明名称
Improvements in or relating to ventilating fans and the like
摘要
申请公布号
GB477449(A)
申请公布日期
1937.12.30
申请号
GB19360018088
申请日期
1936.06.30
申请人
NORMAN DAVIDSON BENNETT
发明人
分类号
F04D25/04
主分类号
F04D25/04
代理机构
代理人
主权项
地址
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