Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10034538 | Height-adjustable work surface assembly | Shawn Sowers, Ronald J. Salsbury, Terry W. Armey, Richard A. Nelson | 2018-07-31 |
| 8359802 | Ceiling system | Marvin K. Burnett, Richard A. Nelson | 2013-01-29 |