Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885932 | Determination of cleanliness level of foam reservoir | Mary B. Heffernan, Bruce Cowger | 1989-12-12 |
| 4853037 | Low glycol inks for plain paper printing | Loren E. Johnson, Norman E. Pawlowski, Jr., Margaret L. Wooding | 1989-08-01 |