Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4860025 | Thermal transfer printing process | William Berson, Patrick M. Murphy, Duc H. Tran | 1989-08-22 |
| 4855756 | Thermal transfer printing apparatus including means for controlling printing on irregularly-shaped letters | Patrick M. Murphy, Duc H. Tran | 1989-08-08 |