Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9487305 | Communications quality analysis | Yifan Yang, Elwyn William Hubbard, Christopher J. Devine, James M. Rush | 2016-11-08 |
| 9220018 | Communications quality analysis | Yifan Yang, Elwyn William Hubbard, Christopher J. Devine, James M. Rush | 2015-12-22 |
| 6283277 | Self-propelled, mobile articulated tramming haulage conveyor system for mining operations | Frank N. Kent, William J. Peters | 2001-09-04 |
| 5871261 | Longwall mine face conveyor pan and method of fabricating | Clarence L. Bandy, Jr. | 1999-02-16 |
| 5389044 | Split sprocket and retainer assembly | Clarence L. Bandy, Jr. | 1995-02-14 |