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发明名称
Perfectionnement à la reproduction sonore au stade de la transformation électroacoustique pour audition monophonique et stéréophonique
摘要
申请公布号
FR1363068(A)
申请公布日期
1964.06.05
申请号
FR19633104891
申请日期
1963.06.10
申请人
发明人
BERNARD RAOUL
分类号
H04R1/02;H04R1/28
主分类号
H04R1/02
代理机构
代理人
主权项
地址
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