发明名称 Touch activated audio sign
摘要 The present invention is directed to an audio sign adapted to provide an aural message once the sign is tactilely actuated. The invention typically includes a graphical information section, a tactile information section, and a self contained audio section configured to provide aural information once tactilely actuated.
申请公布号 US5810597(A) 申请公布日期 1998.09.22
申请号 US19960667390 申请日期 1996.06.21
申请人 ALLEN, JR., ROBERT H. 发明人 ALLEN, JR., ROBERT H.;LAPIETRA, FRANK
分类号 G09F25/00;(IPC1-7):G09B21/00;G09F7/00 主分类号 G09F25/00
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