Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886386 | Ink ribbon having elastomeric protective backing | Ian Hogarth, Andrew Scott, Christine Mackintosh | 1989-12-12 |
| 4884908 | Overlappingly overstrikeable ribbon and use thereof in continuously full cassettes | Ian Hogarth, Andrew Scott, Christine Mackintosh | 1989-12-05 |
| 4801215 | Ramp ribbon cartridge | Uli G. Morf | 1989-01-31 |