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经营范围
发明名称
Electroacoustic driving circuit
摘要
申请公布号
EP0339470(B1)
申请公布日期
1996.01.17
申请号
EP19890107051
申请日期
1989.04.19
申请人
YAMAHA CORPORATION
发明人
NORO, MASAO
分类号
H04R3/04;H04R3/00;(IPC1-7):H04R3/04
主分类号
H04R3/04
代理机构
代理人
主权项
地址
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