Issued Patents All Time
Showing 26–30 of 30 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6690681 | In-band signaling for data communications over digital wireless telecommunications network | Dan Alan Preston, Robert Leyendecker, Wayne Eatherly, Rod L. Proctor | 2004-02-10 |
| 6681121 | Circuitry for activating a modem in a cellular telephone | Dan Alan Preston, Rod L. Proctor | 2004-01-20 |
| 6493338 | Multichannel in-band signaling for data communications over digital wireless telecommunications networks | Dan Alan Preston, Robert Leyendecker, Wayne Eatherly, Rod L. Proctor, Philip Ray Smith | 2002-12-10 |
| 6236652 | Geo-spacial Internet protocol addressing | Dan Alan Preston | 2001-05-22 |
| 6144336 | System and method to communicate time stamped, 3-axis geo-position data within telecommunication networks | Dan Alan Preston, James Vroman | 2000-11-07 |