Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4979587 | Jet engine noise suppressor | William Hirt, Jack H. Caldwell, Ira B. Rushwald, Henry A. Kumasaka | 1990-12-25 |
| 4335801 | Noise suppressing nozzle | Fred R. Kunze | 1982-06-22 |