Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4977502 | Transit vehicle farebox for conducting multi-media transit fare transactions | Joseph R. Baker, Paul A. Mullens, Roger B. Trimble, Charles W. Giebelhausen | 1990-12-11 |
| 4877179 | Farebox security device | Joseph R. Baker, Paul A. Mullens, Roger B. Trimble | 1989-10-31 |
| D289099 | Fast fare processor unit | — | 1987-03-31 |