Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5701540 | Photographic processor and improved filter assembly | John H. Rosenburgh, David L. Patton | 1997-12-23 |
| 5689748 | Photographic process with improved replenishment monitoring system | Raymond E. Wess, John H. Rosenburgh | 1997-11-18 |