Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10879729 | Backup battery systems for traffic cabinets | Tim Hysell, Dan Sisson, Jeffrey William Slobodnik | 2020-12-29 |
| 9570940 | Backup battery systems for traffic cabinets | Tim Hysell, Dan Sisson, Jeffrey William Slobodnik | 2017-02-14 |
| 4984449 | Ultrasonic liquid level monitoring system | Joseph W. Caldwell | 1991-01-15 |