Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4865185 | Crawler-mounted conveying train | — | 1989-09-12 |
| 4852724 | Crawler-mounted conveying train | — | 1989-08-01 |
| 4773528 | Material transfer unit for ground-mounted FCT | Roger C. Anderson, Lyman C. Kightlinger | 1988-09-27 |
| 4380288 | Conveyor | Joseph S. David, Alexander W. Calder | 1983-04-19 |