Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5104048 | Access door for coal crusher feed chute | Theodore W. Cecil, Kelly Michael Smith | 1992-04-14 |
| 4976756 | Dust collector housing with removable roof section | Loren K. Dobyns, Gary S. Hanson | 1990-12-11 |