Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4831390 | Bubble jet printing device with improved printhead heat control | Narayan V. Deshpande, Herman A. Hermanson, Gary A. Kneezel, Roger G. Markham | 1989-05-16 |
| 4797692 | Thermal ink jet printer having ink nucleation control | — | 1989-01-10 |