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经营范围
发明名称
Ventilator for buildings having pitched roofs
摘要
申请公布号
US2645992(A)
申请公布日期
1953.07.21
申请号
US19510217208
申请日期
1951.03.23
申请人
SHAWNEE INDUSTRIES, INC.
发明人
SIMBLEST ALLEN L.
分类号
F24F13/08
主分类号
F24F13/08
代理机构
代理人
主权项
地址
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