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发明名称
VENTILATING CEILING AND SUSPENSION GRID THEREFOR
摘要
申请公布号
CA894002(A)
申请公布日期
1972.02.29
申请号
CAD894002
申请日期
申请人
CONWED CORPORATION
发明人
MERLE A. NICHOLSON
分类号
E04B9/02;E04B9/12;F24F13/06;(IPC1-7):E04B9/02
主分类号
E04B9/02
代理机构
代理人
主权项
地址
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