Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9004995 | Wall curb for air treatment system | Irvin Lee Derks, Randall S. Price | 2015-04-14 |
| 8540557 | Wall curb for air treatment system | Irvin Lee Derks, Randall S. Price | 2013-09-24 |
| 8336672 | Air treatment and sound reduction system | Irvin Lee Derks, Courtney Lee Perkins | 2012-12-25 |