发明名称 HEARING AID
摘要 <p>Hearing aid consisting of two parts that can be separated. A chamber for accommodating a battery is delimited between the two parts. The loudspeaker is located some distance away from the sound-emitting opening and the connecting channel between the loudspeaker and the sound-emitting opening comprises the cavity in which the battery is accommodated.</p>
申请公布号 WO2001041503(A2) 申请公布日期 2001.06.07
申请号 NL2000000891 申请日期 2000.12.04
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