Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4858135 | Tachograph and vehicle speed control device | John Franklin | 1989-08-15 |
| 4782691 | Tachograph including means for recording engine speed | — | 1988-11-08 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4858135 | Tachograph and vehicle speed control device | John Franklin | 1989-08-15 |
| 4782691 | Tachograph including means for recording engine speed | — | 1988-11-08 |