Issued Patents 2002
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6474619 | Tube guide for a column unit | — | 2002-11-05 |
| 6439662 | Spindle for a height regulating device | — | 2002-08-27 |
| 6371421 | Device for controlling the height of a swivel chair | Young Ki Yoon | 2002-04-16 |