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经营范围
发明名称
A draught controlling or regulating devices
摘要
申请公布号
GB369050(A)
申请公布日期
1932.03.17
申请号
GB19310012917
申请日期
1931.05.01
申请人
PIERRE CELESTIN LEYS
发明人
分类号
F24F13/10
主分类号
F24F13/10
代理机构
代理人
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