Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4408683 | Combined clutch and braking arrangement for a tractor | Joe Crabtree | 1983-10-11 |
| 4310082 | Variable speed drive and combined clutch/brake system | Joe Crabtree, Aaron A. Stevens, Randall K. Lawrence | 1982-01-12 |