Issued Patents 2003
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6659555 | Spring unit for weight adjustment of a chair | Rolf Scholz, Frank Weisser, Martin Potrykus | 2003-12-09 |
| 6634716 | Office chair | Martin Potrykus | 2003-10-21 |
| D473726 | Chair | Markus Schaefer | 2003-04-29 |
| 6513874 | Chair, especially office chair | Martin Potrykus | 2003-02-04 |