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经营范围
发明名称
Dairy barn and poultry house ventilator
摘要
申请公布号
US2552966(A)
申请公布日期
1951.05.15
申请号
US19480040327
申请日期
1948.07.23
申请人
AMERICAN MACHINE AND METALS, INC.
发明人
HARP ALONZO M.
分类号
A01K1/00;F24F7/007
主分类号
A01K1/00
代理机构
代理人
主权项
地址
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