Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6540296 | Chair back height-adjustment mechanism | Michael Shats, Vaclav Pernicka | 2003-04-01 |
| 6491344 | Chair adjustment mechanism | Ken A. Beggs | 2002-12-10 |
| 6045187 | Chair seat height adjustment mechanism | — | 2000-04-04 |
| 5997087 | Chair tilt mechanism | — | 1999-12-07 |
| 5944387 | Adjustment mechanism for chairs | — | 1999-08-31 |
| D411929 | Chair armrest component | — | 1999-07-13 |
| D411396 | Chair armrest | — | 1999-06-22 |
| D407246 | Chair armrest | — | 1999-03-30 |
| D397889 | Chair arm rest | — | 1998-09-08 |
| 5484187 | Chair armrest adjustment mechanism | Frank Doerner | 1996-01-16 |
| 5405189 | Chair seat back height adjustment mechanism | — | 1995-04-11 |
| 5382077 | Height adjustment mechanism for a chair seat back | Art A. Patton, Gerard Helmond | 1995-01-17 |
| 5356200 | Unitary brake for a chair tilt mechanism | Art A. Patton | 1994-10-18 |
| 5152580 | Handle assembly for chair control mechanism | — | 1992-10-06 |
| 4771583 | Space divider system | Douglas C. Ball, Gary R. Ludwig, Marshall Walker | 1988-09-20 |
| 4446663 | Acoustical pad | Gary R. Ludwig | 1984-05-08 |
| 4404776 | Hanging components for space divider system | Douglas C. Ball, Gary R. Ludwig | 1983-09-20 |