Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886386 | Ink ribbon having elastomeric protective backing | Hans Paffhausen, Andrew Scott, Christine Mackintosh | 1989-12-12 |
| 4884908 | Overlappingly overstrikeable ribbon and use thereof in continuously full cassettes | Hans Paffhausen, Andrew Scott, Christine Mackintosh | 1989-12-05 |