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发明名称
Dispositif pour amplifier des signaux acoustiques et un signal modifié déduit de ces signaux.
摘要
申请公布号
BE627974(A1)
申请公布日期
1963.08.05
申请号
BE19630627974
申请日期
1963.02.04
申请人
PHILIPS NV
发明人
分类号
G10K15/12;H03G5/04;H04R5/04
主分类号
G10K15/12
代理机构
代理人
主权项
地址
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