Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883117 | Swirl flow heat exchanger with reverse spiral configuration | Bradley Dobbs, Richard E. Niggemann | 1989-11-28 |
| 4869071 | Cooling system for an aircraft pod | Jeffrey Wehner, James L. Bettenga, Guido Biagini, William J. Godecker | 1989-09-26 |