Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885701 | Pen turret control system | Charles Gunderson | 1989-12-05 |
| 4849771 | Plotter pen presence and type identification system | James Lawrence | 1989-07-18 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885701 | Pen turret control system | Charles Gunderson | 1989-12-05 |
| 4849771 | Plotter pen presence and type identification system | James Lawrence | 1989-07-18 |