Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8912921 | Off-road motor vehicle warning system | — | 2014-12-16 |
| 6894604 | Method and apparatus for operating a vehicle safety arm | William R. Phillips | 2005-05-17 |
| 6778072 | Method and apparatus for operating a vehicle safety arm | William R. Phillips | 2004-08-17 |
| 6107915 | System and method of prompting inspection of a multi-passenger vehicle | William R. Phillips | 2000-08-22 |
| 5406250 | Apparatus for operating a school bus safety device | Raymond Heath | 1995-04-11 |
| 5036307 | Weather resistant control system for school bus safety device | Raymond Heath | 1991-07-30 |
| 4916372 | Control system for school bus safety device | Raymond Heath | 1990-04-10 |
| 4816804 | School bus stop sign control apparatus | — | 1989-03-28 |
| 4766413 | School bus stop sign control apparatus | — | 1988-08-23 |