Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8480171 | Office chair | Donald Chadwick, Robert A. Melhuish, Hendrik R. van Hekken, Ron Watson | 2013-07-09 |
| 8388066 | Height adjustment mechanism for a chair | Gregory P. Allison | 2013-03-05 |
| 8348342 | Preference control mechanism | Gregory P. Allison | 2013-01-08 |
| 8172324 | Preference control mechanism | Gregory P. Allison | 2012-05-08 |
| 8167373 | Height adjustment mechanism for a chair | Gregory P. Allison | 2012-05-01 |
| 8002351 | Support member | — | 2011-08-23 |
| 7887131 | Lumbar support | Donald Chadwick, Robert A. Melhuish, Hendrik R. van Hekken, Ron Watson | 2011-02-15 |
| 6742843 | Cable control with overload protection device | — | 2004-06-01 |
| 6682038 | Keyboard support with retractable auxiliary support platforms | — | 2004-01-27 |
| 5683139 | Chair seat tilt adjustment and locking mechanism | Donald A. Wimmer | 1997-11-04 |
| 5476306 | Chair back support adjustment mechanism | — | 1995-12-19 |
| 5464274 | Chair seat tilt adjustment and locking mechanism | Donald A. Wimmer | 1995-11-07 |
| 5417474 | Tilt control mechanism for chairs | — | 1995-05-23 |
| 5388889 | Torque control mechanism for chairs | — | 1995-02-14 |
| 5370445 | Chair control | — | 1994-12-06 |
| 5172969 | Overhead cabinet with rotating door | Robert E. Reuter, Wallace C. Bullwinkle, Larry L. Hoff, Robert E. Anderson, Al Schmidt | 1992-12-22 |
| 5029940 | Chair tilt and chair height control apparatus | Donald A. Wimmer, Bryan B. Bray, Jr., Robert A. Melhuish | 1991-07-09 |