Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4852487 | Method and device for printing images on halves of both sides of sheets | — | 1989-08-01 |
| 4848231 | Method and device for printing images on halves of both sides of sheets | — | 1989-07-18 |
| 4815378 | Method and device for printing images on halves of both sides of sheets | — | 1989-03-28 |