Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5689950 | Ion thruster with graphite accelerator grid | — | 1997-11-25 |
| 5676234 | Coin/token sorting method | Darren E. Beauchamp | 1997-10-14 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5689950 | Ion thruster with graphite accelerator grid | — | 1997-11-25 |
| 5676234 | Coin/token sorting method | Darren E. Beauchamp | 1997-10-14 |