Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6209958 | Universal tilt mechanism for a chair | — | 2001-04-03 |
| 6176548 | Tilt mechanism for chair having adjustable spring characteristics | Patrick Nelson | 2001-01-23 |
| 5961179 | Operator-interactive adjustable workstation | Perry L. Dixon, Robert T. Ritt | 1999-10-05 |
| 5738318 | Chair with vertically shiftable height adjustment | Larry A. Wilkerson | 1998-04-14 |