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经营范围
发明名称
Attic ventilation
摘要
申请公布号
US2191774(A)
申请公布日期
1940.02.27
申请号
US19390262943
申请日期
1939.03.20
申请人
REED LYMAN C
发明人
REED LYMAN C.
分类号
F24F7/02;F24F11/04;F24F13/14;F24F13/15
主分类号
F24F7/02
代理机构
代理人
主权项
地址
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