Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5381022 | Combined optical waveguide and prismatic liquid-level sensor | James B. Dockendorff | 1995-01-10 |
| 5088324 | Combined liquid-level and conductivity sensor | — | 1992-02-18 |
| 4979797 | Multi-level fiber-optic liquid-level sensing system | — | 1990-12-25 |