Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4990430 | Process for retouching dye images | John W. Harder | 1991-02-05 |
| 4861701 | Photographic element and process comprising a compound which comprises two timing groups in sequence | Terry R. Taber | 1989-08-29 |
| 4838910 | Air driven filtration system | William R. Stollenwerk | 1989-06-13 |