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发明名称
Diffuseur acoustique à surfaces èlémentaires gauchies à arêtes parallèles
摘要
申请公布号
FR38511(E)
申请公布日期
1931.06.13
申请号
FRD38511
申请日期
1929.12.16
申请人
发明人
LUMIERE LOUIS
分类号
H04R1/24;H04R7/04;H04R7/14
主分类号
H04R1/24
代理机构
代理人
主权项
地址
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