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发明名称
Improvements in and relating to ventilating devices
摘要
申请公布号
GB449200(A)
申请公布日期
1936.06.23
申请号
GB19350004251
申请日期
1935.02.09
申请人
WILLIAM CRAIG;JOHN CRAIG
发明人
分类号
F24F7/00
主分类号
F24F7/00
代理机构
代理人
主权项
地址
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