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发明名称
ACOUSTICAL CONTROL MEDIA
摘要
申请公布号
EP0050450(A3)
申请公布日期
1983.12.14
申请号
EP19810304676
申请日期
1981.10.08
申请人
STEELCASE INC.
发明人
WEBSTER, MICHAEL PAUL
分类号
E04B1/82;E04B1/84;E04B2/74;(IPC1-7):E04B1/86
主分类号
E04B1/82
代理机构
代理人
主权项
地址
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