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发明名称
HEADPHONE DEVICES
摘要
申请公布号
EP0363082(A3)
申请公布日期
1991.09.18
申请号
EP19890309912
申请日期
1989.09.28
申请人
SONY CORPORATION
发明人
DOHI, MASAHIRO C/O PATENTS DIVISION;NAGENO, KOJI C/O PATENTS DIVISION
分类号
H04R1/10;(IPC1-7):H04R5/033
主分类号
H04R1/10
代理机构
代理人
主权项
地址
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