Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8229666 | Generating and using pattern keys in navigation systems to predict user destinations | David R. Bell, Chris Bygrave, Philip L. Norton | 2012-07-24 |
| 7515065 | Early warning system for approaching emergency vehicles | Chris Bygrave, Phillip Norton, David R. Bell | 2009-04-07 |
| 7487017 | Systems and methods for generating pattern keys for use in navigation systems to predict user destinations | David R. Bell, Chris Bygrave, Philip L. Norton | 2009-02-03 |