Issued Patents 2021
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11083335 | High-efficiency heating apparatus | David H. McFadden | 2021-08-10 |
| 11083336 | High-efficiency heating apparatus | David H. McFadden | 2021-08-10 |
| 10966570 | High-efficiency heating apparatus | David H. McFadden | 2021-04-06 |