Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8937560 | Vehicle detection two-wire magnetic field sensing probe with communication capability | — | 2015-01-20 |
| 7132959 | Non-interfering vehicle detection | Robert S. Allen | 2006-11-07 |
| 6087964 | Vehicle detector with operational display | Robert S. Allen, Thomas Potter | 2000-07-11 |
| 5247297 | Vehicle detector method for multiple vehicle counting | Robert S. Allen | 1993-09-21 |
| 5198811 | Vehicle communication system using existing roadway loops wherein the physical integrity of the loop is kept intact | Thomas Potter | 1993-03-30 |
| 5089815 | Vehicle communication system using existing roadway loops | Thomas Potter | 1992-02-18 |
| 4996716 | Vehicle communication system using existing roadway loops | Thomas Potter | 1991-02-26 |
| 4731867 | Vehicle communication system using existing roadway loops | Thomas Potter | 1988-03-15 |
| D290707 | Keyboard and display panel for intersection controller | Robert S. Allen, Richard Freeman | 1987-07-07 |