Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6329907 | Emergency power system for traffic control signals | Charles W. Uischner | 2001-12-11 |
| 6094130 | Emergency power station for traffic control signals | Charles W. Uischner | 2000-07-25 |