Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6416134 | Underground auger system | Douglas J. Share, Troy Blackford | 2002-07-09 |
| 5695016 | Auger telescoping hoist assembly and holding fork mechanism | Randal L. Keefer | 1997-12-09 |
| 5685382 | Quadrapod auger support | — | 1997-11-11 |
| 4732224 | Auger apparatus | Robert J. Fisher | 1988-03-22 |
| 4264106 | Auger mining machine | Thad A. Lora, Warren Kelm | 1981-04-28 |