Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4835553 | Thermal ink jet printhead with increased drop generation rate | Peter A. Torpey, Ivan Rezanka, Donald J. Drake | 1989-05-30 |
| 4831390 | Bubble jet printing device with improved printhead heat control | Dale R. Ims, Herman A. Hermanson, Gary A. Kneezel, Roger G. Markham | 1989-05-16 |