Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4979587 | Jet engine noise suppressor | William Hirt, Claude R. Stachowiak, Ira B. Rushwald, Henry A. Kumasaka | 1990-12-25 |
| 4469354 | Breakaway duct coupling | — | 1984-09-04 |
| 4331338 | Duct seal assembly | Peter Llewellyn | 1982-05-25 |