Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6178141 | Acoustic counter-sniper system | Gregory L. Duckworth, James E. Barger | 2001-01-23 |
| 5930202 | Acoustic counter-sniper system | Gregory L. Duckworth, James E. Barger | 1999-07-27 |
| 5628407 | Method and apparatus for separation of magnetically responsive spheres | Peter G. Cable | 1997-05-13 |
| 4698912 | Magnetic compass calibration | John T. Fowler | 1987-10-13 |