Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6236851 | Prepaid security cellular telecommunications system | Douglas Fougnies | 2001-05-22 |
| 6157823 | Security cellular telecommunications system | Douglas Fougnies | 2000-12-05 |
| 5854975 | Prepaid security cellular telecommunications system | Douglas Fougnies | 1998-12-29 |
| 5722067 | Security cellular telecommunications system | Douglas Fougnies | 1998-02-24 |
| 4426623 | Ripple free amplitude demodulator | Dean Wilkens, Norman W. Hawn | 1984-01-17 |