Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7164892 | Dual-mode transmitter for railroad crossings | Brad R. Butterworth, Thomas Macone | 2007-01-16 |
| 7110731 | Dual-mode transmitter | Brad R. Butterworth, Thomas Macone | 2006-09-19 |
| 7107023 | Dual-mode transmitter | Henry B. Wallace | 2006-09-12 |