Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7164892 | Dual-mode transmitter for railroad crossings | George E. Derome, Brad R. Butterworth | 2007-01-16 |
| 7110731 | Dual-mode transmitter | George E. Derome, Brad R. Butterworth | 2006-09-19 |