发明授权
US6157813A Portable one-way radio pager and a method of transmitting messages
thereto
失效
便携式单向无线寻呼机和一种向其发送消息的方法
- 专利标题： Portable one-way radio pager and a method of transmitting messages thereto
- 专利标题（中）： 便携式单向无线寻呼机和一种向其发送消息的方法
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申请号： US38460申请日： 1998-03-11
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公开(公告)号： US6157813A公开(公告)日： 2000-12-05
- 发明人: Jacques Lewiner , Eric Carreel
- 申请人： Jacques Lewiner , Eric Carreel
- 专利权人： Lewiner; Jacques,Carreel; Eric
- 当前专利权人： Lewiner; Jacques,Carreel; Eric
- 优先权： FRX9702856 19970311
- 主分类号： G08B5/22
- IPC分类号： G08B5/22 ; H04Q7/00
摘要：
A portable one-way radio pager includes receiver means for receiving coded radio messages, a CPU for processing the messages, and a control memory containing at least one number referred to as "validity data" representative of a certain sum of money, the CPU being designed to decrement the validity data progressively during operation of the pager and to prevent normal operation of the pager when said validity data is less than a predetermined minimum value.
公开/授权文献
- USD371371S Submersible pump 公开/授权日：1996-07-02
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