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经营范围
发明名称
ACOUSTICAL CEILING
摘要
申请公布号
US3505771(A)
申请公布日期
1970.04.14
申请号
USD3505771
申请日期
1968.02.12
申请人
WALTER W. THOMPSON
发明人
WALTER W. THOMPSON
分类号
E04B9/12;(IPC1-7):E04B5/52
主分类号
E04B9/12
代理机构
代理人
主权项
地址
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