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发明名称
Perfectionnements aux haut-parleurs électrostatiques
摘要
申请公布号
FR70574(E)
申请公布日期
1959.05.29
申请号
FRD70574
申请日期
1956.10.10
申请人
FERRANTI LIMITED
发明人
WALKER PETER JAMES
分类号
H04R19/02
主分类号
H04R19/02
代理机构
代理人
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地址
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