Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4865958 | Photographic recording material comprising leuco dye for cold silver image tone | Thomas I. Abbott, Michael P. Youngblood | 1989-09-12 |
| 4803150 | Radiographic element exhibiting reduced crossover | James E. Kelly, Donald R. Diehl, Ronda E. Factor | 1989-02-07 |