Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D275374 | Fluid flow monitor for ion exchange unit that regenerates photographic developers | Brian C. Barbo, Richard Klein, Robert M. Kahute | 1984-09-04 |
| D275277 | Control console for ion exchange unit that regenerates photographic developers | Brian C. Barbo, Richard Klein, Robert M. Kahute | 1984-08-28 |