Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6428592 | Furnace with a panel and filter assembly | Thomas D. Chase | 2002-08-06 |
| 6389994 | Furnace with front panel assembly | Thomas D. Chase | 2002-05-21 |
| 5852902 | Locking entry grid | — | 1998-12-29 |
| 5782044 | Multi-tread entry grid | Ronald N. Dodd, Johnnie Daniel Hilburn, Jr. | 1998-07-21 |