Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7973649 | Method of an apparatus for sensing the unauthorized movement of vehicles and the like and generating an alarm or warning of vehicle theft | — | 2011-07-05 |
| 6876858 | Methods of and system for portable cellular phone voice communication and positional location data communication using the cellular phone network control channel | William Duvall | 2005-04-05 |
| 6847825 | Method and system for portable cellular phone voice communication and positional location data communication | William Duvall | 2005-01-25 |