Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5244253 | Height adjustment control for a chair | Geoffrey A. Hollington, Robert A. Nagelkirk, Mark E. Kuyper | 1993-09-14 |
| 5192114 | Tilt adjustment control for a chair | Geoffrey A. Hollington, Robert A. Nagelkirk, Mark E. Kuyper | 1993-03-09 |
| 5106157 | Chair height and tilt adjustment mechanisms | Robert A. Nagelkirk, Mark E. Kuyper | 1992-04-21 |
| 4861122 | Storage cabinet | Thomas J. Newhouse, Donald D. Goeman | 1989-08-29 |