Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883117 | Swirl flow heat exchanger with reverse spiral configuration | David B. Wigmore, Richard E. Niggemann | 1989-11-28 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883117 | Swirl flow heat exchanger with reverse spiral configuration | David B. Wigmore, Richard E. Niggemann | 1989-11-28 |