Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4949098 | Thermal printhead controlling means | Patrick M. Murphy | 1990-08-14 |
| 4926193 | Thermal transfer ribbon cartridge including ribbon perforating means | William Berson, Patrick M. Murphy, Christopher D. Smith, Duc H. Tran | 1990-05-15 |
| 4899172 | Method and apparatus for perforating indicia on used thermal transfer ribbon within a cassette | William Berson, Patrick M. Murphy, Christopher D. Smith, Duc H. Tran | 1990-02-06 |
| 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 |
| 4249111 | Automatic lamp shutdown circuit | — | 1981-02-03 |