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发明名称
Haut-parleur
摘要
申请公布号
FR776417(A)
申请公布日期
1935.01.25
申请号
FRD776417
申请日期
1934.07.24
申请人
THE ROLA COMPANY
发明人
分类号
H04R9/02;H04R9/06
主分类号
H04R9/02
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代理人
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