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发明名称
A LIGHT TRANSMISSIVE ACOUSTIC PLATE
摘要
申请公布号
GB1210702(A)
申请公布日期
1970.10.28
申请号
GB19680013383
申请日期
1968.03.20
申请人
GRUNZWEIG & HARTMANN AG.
发明人
分类号
E04B9/00;E04B9/32;E04C2/54;E06B7/28
主分类号
E04B9/00
代理机构
代理人
主权项
地址
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