Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4449581 | Heat exchanger fin element with dog-bone type pattern of corrugations | Gerald W. Lemmon | 1984-05-22 |
| 4428418 | Heat exchanger fin element with folded over side edges | Marvin D. Beasley, Gerald W. Lemmon | 1984-01-31 |