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发明名称
HEARING AID
摘要
PURPOSE:To enable a hearing aid avoiding heavy sound in the brain and clear in sound directional sensitivity.
申请公布号
JPS52125207(A)
申请公布日期
1977.10.20
申请号
JP19760042852
申请日期
1976.04.14
申请人
MATSUSHITA ELECTRIC IND CO LTD
发明人
ATOCHI NOBUHISA;SUGUNO HIROYUKI
分类号
H04R25/02
主分类号
H04R25/02
代理机构
代理人
主权项
地址
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