Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5481867 | Combustor | Thomas L. DuBell | 1996-01-09 |
| 5297385 | Combustor | Thomas L. DuBell | 1994-03-29 |
| 4991398 | Combustor fuel nozzle arrangement | Jim A. Clark, Thomas L. DuBell | 1991-02-12 |
| 4979361 | Stepped diffuser | Jim A. Clark, Barton R. Field | 1990-12-25 |