Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4865956 | Photographic elements containing a bleach accelerator precursor | John W. Harder | 1989-09-12 |
| 4840884 | Photographic element and process comprising a dye releasing group | Jared B. Mooberry | 1989-06-20 |