Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D296004 | Refractometer | — | 1988-05-31 |
| D291702 | Microscope stand with a built-in illuminator | — | 1987-09-01 |
| D290128 | Vertical fluorescence microscope attachment | — | 1987-06-02 |
| D290129 | Combined microscope stand and illuminator | — | 1987-06-02 |
| D285485 | Refractometer | — | 1986-09-02 |
| D284545 | Housing for self-igniting gas torch | John M. Nelson | 1986-07-08 |
| D284554 | Housing for self-igniting gas torch | John M. Nelson | 1986-07-08 |
| D283227 | Photographic exposure control | — | 1986-04-01 |
| D275374 | Fluid flow monitor for ion exchange unit that regenerates photographic developers | Brian C. Barbo, Richard Klein, Thomas N. Hendrickson | 1984-09-04 |
| D275277 | Control console for ion exchange unit that regenerates photographic developers | Brian C. Barbo, Richard Klein, Thomas N. Hendrickson | 1984-08-28 |