Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11698236 | Grip safety interlock for firearm | Michael Zung | 2023-07-11 |
| 11243035 | Grip safety interlock for firearm | Michael Zung | 2022-02-08 |
| 10767949 | Two-stage safety selectors for firearms | Michael Zung | 2020-09-08 |
| 6771863 | Fiber optic cable | William J. Oxford, David R. Porter | 2004-08-03 |
| 5253682 | Free piston gas delivery apparatus and method | Carl E. Haskett | 1993-10-19 |
| 4206730 | Method for recycling exhaust gas from an internal combustion engine | — | 1980-06-10 |
| 4192267 | Exhaust gas recycling in an internal combustion engine | — | 1980-03-11 |