Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10724527 | Liquid sensing switch | — | 2020-07-28 |
| 9366560 | Detector for detecting a change in a fluid level and generating a digital signal | Clark F. Johnson, Allen Sullender | 2016-06-14 |
| 5719556 | Liquid level sensor utilizing AC and resistance | Robert D. Albin | 1998-02-17 |
| 5623252 | Liquid level detector using audio frequencies | Randal J. Cacciola | 1997-04-22 |