Local emergency alert for cell-phone users
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United States of America Patent
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-
Apr 19, 2005
Grant Date -
Nov 6, 2003
app pub date -
Jan 23, 2002
filing date -
Jan 23, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Local emergency alert service for cell-phone or pager users is provided using regional or localized broadcast to or polling of available, voluntary, or otherwise identified wireless communication devices or other network-accessible nodes operating using different protocol in proximate help area, thus allowing such alerted users to respond to nearby emergency request or condition. Wireless communicator location is determined using relative satellite positioning, radio signal triangulation, or manual entry technique. Sensor may alert wireless communicator automatically of emergency condition.
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