Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6158121 | Method and apparatus for making a recuperator cell | Doug R. Ervin, Robert A. Prochnow | 2000-12-12 |
| 6112403 | Method and apparatus for making a recuperator cell | Doug R. Ervin, Robert A. Prochnow | 2000-09-05 |
| 5918368 | Method for making a recuperator cell | Doug R. Ervin, Robert A. Prochnow | 1999-07-06 |