Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5064147 | Upwardly opening plug-type door for use as an over-wing emergency hatch | Donald R. Noble | 1991-11-12 |
| 4854010 | Hinge mechanism for aircraft door | Miloslav Puncoch | 1989-08-08 |
| 4479623 | Spring operated counterbalance hinge assembly for aircraft doors | Allan W. Opsahl | 1984-10-30 |
| 4447026 | Cam operated counterbalance assembly for aircraft doors | — | 1984-05-08 |