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发明名称
Heating and ventilating unit
摘要
申请公布号
US1838505(A)
申请公布日期
1931.12.29
申请号
US19310525370
申请日期
1931.03.26
申请人
THE HERMAN NELSON CORPORATION
发明人
SHURTLEFF WILFRED
分类号
F28D1/02
主分类号
F28D1/02
代理机构
代理人
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地址
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