专利名称：Telephone handset
发明人：VEURMAN JOHANNES-ROELOF申请号：AU44153申请日：19930707公开号：AU44153A公开日：19940214
摘要：A telephone handset (1) with transducer units (4, 6) fitted in the earpiece andmouthpiece region (2, 3) in which there are sound apertures (5, 7) in the handset casing inthe region of the transducer units (4, 6). It is the purpose of the present invention todesign the arrangement of the sound apertures (5, 7) in the handset in such a way as toprovide a more compact construction while preventing undesired feedback. To this endthe sound apertures (7) in the mouthpiece region (3) are arranged in a plane facing awayfrom the plane of the sound aperture (5) in the earpiece region (2).
申请人：SIEMENS AG
更多信息请下载全文后查看
因篇幅问题不能全部显示，请点此查看更多更全内容
Copyright © 2019- yrrf.cn 版权所有 赣ICP备2024042794号-2
违法及侵权请联系：TEL:199 1889 7713 E-MAIL:2724546146@qq.com
本站由北京市万商天勤律师事务所王兴未律师提供法律服务