Issued Patents 1982
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4336546 | Magnetic printing apparatus | Donald W. Edwards, Arend Van Roggen | 1982-06-22 |
| 4329694 | AC Corona to remove background from the transfer member of a thermomagnetic copier | Donald W. Edwards, Arend Van Roggen | 1982-05-11 |
| 4323904 | Magnetic printing process and apparatus | Donald W. Edwards | 1982-04-06 |