Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5138881 | Liquid level sensor including conductive plastic technology | Richard E. Riley | 1992-08-18 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5138881 | Liquid level sensor including conductive plastic technology | Richard E. Riley | 1992-08-18 |