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发明名称
Haut-parleur électro-statique
摘要
申请公布号
FR711807(A)
申请公布日期
1931.09.18
申请号
FRD711807
申请日期
1931.02.23
申请人
发明人
VOGT HANS
分类号
H04R19/02
主分类号
H04R19/02
代理机构
代理人
主权项
地址
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