Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4508305 | Tilt lock means for a drafting table | Sigurd A. Johnson, Frank S. Avella | 1985-04-02 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4508305 | Tilt lock means for a drafting table | Sigurd A. Johnson, Frank S. Avella | 1985-04-02 |