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发明名称
Ventilating unit
摘要
申请公布号
US1971356(A)
申请公布日期
1934.08.28
申请号
US19310559516
申请日期
1931.08.26
申请人
THE HERMAN NELSON CORPORATION
发明人
SHURTLEFF WILFRED
分类号
F24F7/013
主分类号
F24F7/013
代理机构
代理人
主权项
地址
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