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发明名称
VENTILATING CEILING
摘要
申请公布号
US3492935(A)
申请公布日期
1970.02.03
申请号
USD3492935
申请日期
1962.04.09
申请人
CONWED CORP.
发明人
GEORGE W. THOMAS
分类号
E04B9/02;E04B9/06;F24F7/10;F24F13/072;(IPC1-7):F24F13/08
主分类号
E04B9/02
代理机构
代理人
主权项
地址
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