Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4862025 | Dual speed sensor pickup assembly | Joseph Dierker, Jr., Glen Peterson | 1989-08-29 |
| 4862028 | Exciter rotor assembly | Joseph Dierker, Jr., Glen Peterson | 1989-08-29 |
| 4804234 | Tractor-trailer brake control system | Mark W. Sullivan | 1989-02-14 |
| 4804237 | Tractor-trailer brake control system | Mark W. Sullivan | 1989-02-14 |