Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6619888 | Flange nut for mine roof bolt | John C. Stankus, Michael Cokus, Steve Oyler, John G. Oldsen | 2003-09-16 |
| 6599059 | Three-prong shell | John C. Stankus, Brandon Demrey, Jack R. Eaton, Larry Boozer | 2003-07-29 |