发明名称 WARNING UNIT
摘要 <p>A warning unit comprises a housing (10) for mounting to a wall, the housing (10) containing a control unit and the warning unit having a proximity sensor (14) for detecting the approach of any person to cause the control unit to energise a sound emitting device (24), which preferably replays a verbal warning message.</p>
申请公布号 WO2004044859(A1) 申请公布日期 2004.05.27
申请号 WO2003GB04979 申请日期 2003.11.14
申请人 WILSON, PAUL, ANDREW;WILSON, GARY, MICHAEL 发明人 WILSON, PAUL, ANDREW
分类号 G08B7/06;G08B3/10;(IPC1-7):G08B3/10 主分类号 G08B7/06
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