Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4740037 | Continuous mining machine | Donald T. Eager, George H. Keene, Robert A. Newman, Donald A. Kelly, Norman B. Mason | 1988-04-26 |
| 4348149 | Mobile transporter for mines | — | 1982-09-07 |