Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5586809 | Height adjustment mechanism for a chair backrest | — | 1996-12-24 |
| 4550893 | Hanger clip for retaining a component to a slotted upright | Delbert Wiersema | 1985-11-05 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5586809 | Height adjustment mechanism for a chair backrest | — | 1996-12-24 |
| 4550893 | Hanger clip for retaining a component to a slotted upright | Delbert Wiersema | 1985-11-05 |