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经营范围
发明名称
Acoustic ceiling
摘要
申请公布号
US3321877(A)
申请公布日期
1967.05.30
申请号
US19640346651
申请日期
1964.02.24
申请人
ARMSTRONG CORK COMPANY
发明人
ALEXIEFF STEPHEN T.
分类号
E04B9/00;E04B9/04
主分类号
E04B9/00
代理机构
代理人
主权项
地址
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