发明名称 Lighted display for a console
摘要 A lighted display for a console, particularly for a telephone console for private branch exchanges, comprises a sandwich structure of a front transparent cover of a dark coloured material, an indicator layer or sheet of dark non-transparent material having transparent characters thereon and a plurality of lamps mounted in holders behind the indicator sheet, a lamp aligned with each character. When assembled an apparently completely dark blank display is presented, but on lighting of a lamp a clear distinct indication appears. Indication characters can be in vertical columns, and there is no need to stagger characters as occurs with conventional displays with "edge-lit" characters.
申请公布号 US3949504(A) 申请公布日期 1976.04.13
申请号 US19740513230 申请日期 1974.10.09
申请人 NORTHERN ELECTRIC COMPANY, LIMITED 发明人 WILLIS, WESLEY NELSON;LAING, GRAHAM STIRLING
分类号 G09F13/04;G09F13/08;(IPC1-7):G09F13/04 主分类号 G09F13/04
代理机构 代理人
主权项
地址