Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4882465 | Arcjet thruster with improved arc attachment for enhancement of efficiency | Steven C. Knowles | 1989-11-21 |
| 4866929 | Hybrid electrothermal/electromagnetic arcjet thruster and thrust-producing method | Steve Knowles | 1989-09-19 |
| 4813025 | Safety alert and locating system | David B. Rowland | 1989-03-14 |
| 4800716 | Efficiency arcjet thruster with controlled arc startup and steady state attachment | Steven C. Knowles | 1989-01-31 |