Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4896588 | Self-cleaning cabin airflow regulating device | Douglas E. Peash | 1990-01-30 |
| 4742760 | Aircraft cabin ventilation system | Raymond H. Horstman, Douglas E. Peash, Arthur S. Yorozu | 1988-05-10 |