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发明名称
Air conduction hearing aid having adjacently mounted microphone and receiver
摘要
申请公布号
US2506981(A)
申请公布日期
1950.05.09
申请号
US19460705724
申请日期
1946.10.25
申请人
WEAVER LAWRENCE G;HUMBERT MILANI
发明人
WEAVER LAWRENCE G.;MILANI HUMBERT
分类号
H04R25/04
主分类号
H04R25/04
代理机构
代理人
主权项
地址
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