Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5690438 | Continuous or endless loop printing ribbon cassettes and reinking devices therefor | Bernard P. Sheehan | 1997-11-25 |
| 5681379 | Thermal transfer ribbon formulation | Shashi G. Talvalkar, Marion E. McCreight | 1997-10-28 |
| 5667317 | Fluorescent security system for printed transaction records | — | 1997-09-16 |