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经营范围
发明名称
Improvements in ventilator constructions for buildings
摘要
申请公布号
GB599567(A)
申请公布日期
1948.03.16
申请号
GB19450024127
申请日期
1945.09.18
申请人
ANN MORRIS
发明人
分类号
E06B7/084
主分类号
E06B7/084
代理机构
代理人
主权项
地址
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