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经营范围
发明名称
Acoustical ceiling construction
摘要
申请公布号
US2742122(A)
申请公布日期
1956.04.17
申请号
US19520277180
申请日期
1952.03.18
申请人
DUO-FLEX CORPORATION
发明人
STANLEY JOHN E.
分类号
E04B9/00;E04B9/16
主分类号
E04B9/00
代理机构
代理人
主权项
地址
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