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发明名称
Dispositif de centrage pour haut-parleurs
摘要
申请公布号
FR759945(A)
申请公布日期
1934.02.13
申请号
FRD759945
申请日期
1932.11.19
申请人
发明人
PIAT JEAN-EMILE
分类号
H04R9/04
主分类号
H04R9/04
代理机构
代理人
主权项
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