Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4351424 | Combined clutch and brake | Randall K. Lawrence | 1982-09-28 |
| 4310082 | Variable speed drive and combined clutch/brake system | Raymond L. Elmy, Joe Crabtree, Randall K. Lawrence | 1982-01-12 |