Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10823449 | Composite duct with reinforcement | Douglas D. Maben, Johnathan Perdoch, Altagracia Saldana | 2020-11-03 |
| 5566667 | Smoke filter with automated clogging prevention for open-hearth fireplaces | — | 1996-10-22 |