Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4838373 | Suspension structure for a tracked vehicle | Robert J. Price, Andrew J. Tonsor, Ronald L. Satzler, Samuel B. Stevens | 1989-06-13 |
| 4836318 | Track roller frame assembly | Andrew J. Tonsor, David E. Nelson, Samuel B. Stevens | 1989-06-06 |
| 4834478 | Track roller frame assembly | Samuel B. Stevens, Andrew J. Tonsor | 1989-05-30 |