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发明名称
Ventilating system
摘要
申请公布号
US1747271(A)
申请公布日期
1930.02.18
申请号
US19280313974
申请日期
1928.10.22
申请人
DAVID LUPTON'S SONS COMPANY
发明人
WALTON HOWARD T.
分类号
F24F13/15
主分类号
F24F13/15
代理机构
代理人
主权项
地址
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