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发明名称
Improvements in and connected with ventilating devices
摘要
申请公布号
GB499691(A)
申请公布日期
1939.01.27
申请号
GB19380006052
申请日期
1938.02.25
申请人
CHATSWORTH INVESTMENTS PROPRIETARY LIMITED
发明人
分类号
E06B7/02
主分类号
E06B7/02
代理机构
代理人
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