Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9067609 | Vital solid state controller | David Baldwin | 2015-06-30 |
| 9026283 | Train detection | David Baldwin | 2015-05-05 |
| 8888052 | Vehicle detection system | David Baldwin | 2014-11-18 |
| 8517316 | Vehicle detection system | David Baldwin | 2013-08-27 |
| 8469320 | Vital solid state controller | David Baldwin | 2013-06-25 |
| 8157219 | Vehicle detection system | David Baldwin | 2012-04-17 |
| 8028961 | Vital solid state controller | David Baldwin | 2011-10-04 |