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经营范围
发明名称
Louver damper
摘要
申请公布号
US2331758(A)
申请公布日期
1943.10.12
申请号
US19390297854
申请日期
1939.10.04
申请人
THE POWERS REGULATOR COMPANY
发明人
BARNETT HARRY
分类号
F24F13/14
主分类号
F24F13/14
代理机构
代理人
主权项
地址
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