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发明名称
Improvements in and relating to extractor ventilators
摘要
申请公布号
GB554759(A)
申请公布日期
1943.07.19
申请号
GB19420000943
申请日期
1942.01.22
申请人
GREENWOOD'S AND AIRVAC VENTILATING COMPANY LIMITED;BENJAMIN DONALD HUGHES;ERNEST LEONARD FORD
发明人
分类号
F24F7/02
主分类号
F24F7/02
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