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发明名称
HEARING AID DEVICES
摘要
申请公布号
EP0054450(B1)
申请公布日期
1984.07.04
申请号
EP19810401782
申请日期
1981.11.10
申请人
LAFON, JEAN-CLAUDE
发明人
LAFON, JEAN-CLAUDE
分类号
H04R25/00;(IPC1-7):04R25/00
主分类号
H04R25/00
代理机构
代理人
主权项
地址
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