发明名称 ACOUSTIC PASS THROUGH FOR HANDSETS
摘要 <p>An acoustic pass through is provided in telephone handsets for sounds transmitted from a hands free operation speaker laid out underneath the handset. One or more cutouts in a middle portion of the handset in various shapes such as rectangular, round, elliptical, and similar allows enhanced sound quality when the speakerphone feature is used and flexibility in handset design.</p>
申请公布号 EP2356804(A4) 申请公布日期 2013.01.16
申请号 EP20090827954 申请日期 2009.10.23
申请人 MICROSOFT CORPORATION 发明人 VERTHEIN, WILLIAM G.;LEE, STEPHEN G.
分类号 H04M1/04;G06K1/00;H04M1/03;H04M1/06;H04M1/62 主分类号 H04M1/04
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