Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4989032 | Proof light | Frank A. Hull | 1991-01-29 |
| 4941746 | Apparatus for automatically determining the densities of a graphic image | Frank A. Hull, Curt Frederick | 1990-07-17 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4989032 | Proof light | Frank A. Hull | 1991-01-29 |
| 4941746 | Apparatus for automatically determining the densities of a graphic image | Frank A. Hull, Curt Frederick | 1990-07-17 |