| 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 |