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发明名称
VENTILATING CEILING CONSTRUCTION
摘要
申请公布号
US3543669(A)
申请公布日期
1970.12.01
申请号
USD3543669
申请日期
1968.11.18
申请人
BALDWIN EHRET HILL INC.
发明人
MICHAEL J. KODARAS
分类号
E04B9/02;F24F13/072;(IPC1-7):F24F13/06
主分类号
E04B9/02
代理机构
代理人
主权项
地址
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