Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4845949 | Parking brake for integrated transmission | Charles C. Shivvers, Steven D. Shivvers, Edward A. Ryks | 1989-07-11 |
| 4843817 | Integrated hydraulic transmission | Charles C. Shivvers, Steven D. Shivvers, Edward A. Ryks | 1989-07-04 |