发明名称 Hands-free device for telephone, has two air channels for transmission of sound waves
摘要 A remote telephone has a housing (2), microphone (4) and remote ear piece (5) and is equipped with a hands-free device for the operator. The hands-free device has two air channels (9,10) for transmission of sound waves, in which one air channel (9) forms an air chamber (12) corresponding to the microphone (4), and in which the air channel (10) is designed to form an air chamber (13) corresponding to the remote ear-piece (5). An Independent claim is given for a hands-free telephone device.
申请公布号 DE10130248(A1) 申请公布日期 2003.01.02
申请号 DE20011030248 申请日期 2001.06.22
申请人 FEIDAS, NIKOLAOS 发明人 FEIDAS, NIKOLAOS
分类号 G10K11/22;H04M1/05;H04M1/60;H04M1/62;H04M1/725;(IPC1-7):H04M1/02 主分类号 G10K11/22
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