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经营范围
发明名称
FIRE DAMPER
摘要
申请公布号
US3543440(A)
申请公布日期
1970.12.01
申请号
USD3543440
申请日期
1969.02.06
申请人
JOHN C. KURZ
发明人
JOHN C. KURZ
分类号
A62C2/14;E06B7/084;F24F13/02;F24F13/15;(IPC1-7):E05F15/20
主分类号
A62C2/14
代理机构
代理人
主权项
地址
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