Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9799217 | Vehicle detector with improved loop oscillator circuit | — | 2017-10-24 |
| 8842023 | Bicycle detector | Lu Jason Zhen-Yu, Mysz Christopher | 2014-09-23 |
| 8779942 | Bicycle detector with improved detection using signature analysis | Jason Lu | 2014-07-15 |
| 8374573 | AVI system with improved receiver signal processing | — | 2013-02-12 |
| 7014355 | Electronic parking meter system | Ralph Ferguson | 2006-03-21 |
| 6281809 | Vehicle detector with audible call signal indicator | — | 2001-08-28 |
| 6087964 | Vehicle detector with operational display | Robert S. Allen, Thomas W. Seabury | 2000-07-11 |
| 5936551 | Vehicle detector with improved reference tracking | Robert S. Allen | 1999-08-10 |
| 5198811 | Vehicle communication system using existing roadway loops wherein the physical integrity of the loop is kept intact | Thomas W. Seabury | 1993-03-30 |
| 5089815 | Vehicle communication system using existing roadway loops | Thomas W. Seabury | 1992-02-18 |
| 5028921 | Vehicle detector method and system | — | 1991-07-02 |
| 4996716 | Vehicle communication system using existing roadway loops | Thomas W. Seabury | 1991-02-26 |
| 4731867 | Vehicle communication system using existing roadway loops | Thomas W. Seabury | 1988-03-15 |
| 4293841 | Pedestrian traffic control system | — | 1981-10-06 |