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发明名称
摘要
A hearing aid of the type which is worn behind the ear has a battery compartment and a volume control knob at its lower end. The compartment and knob are at right angles to the longitudinal axis of the device.
申请公布号
JPS6164800(U)
申请公布日期
1986.05.02
申请号
JP19850144113U
申请日期
1985.09.20
申请人
发明人
分类号
H04R25/00;H04R25/02;(IPC1-7):H04R25/02
主分类号
H04R25/00
代理机构
代理人
主权项
地址
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