Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5553461 | Anti-icing heat exchanger for aircraft air cycle performance enhancement | Richard W. Hitzigrath | 1996-09-10 |
| 5309724 | Switchable heat exchanger configuration for air cycle cooling apparatus | Richard Yurman | 1994-05-10 |