Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8282318 | Roof bolt anchor with camming element | — | 2012-10-09 |
| 8215875 | Bolt anchor | — | 2012-07-10 |
| 8164473 | Mine roof monitoring apparatus | — | 2012-04-24 |
| 7959379 | Bolt anchor | — | 2011-06-14 |
| 7179020 | Mine roof bolt anchoring system and method | — | 2007-02-20 |
| 6986623 | Method and apparatus for anchoring a mine roof bolt | — | 2006-01-17 |
| 6682268 | Method and apparatus for secondary roof support in an underground mine | James Earl | 2004-01-27 |
| 6637980 | Method and apparatus for re-tensioning a roof bolt in an underground mine | — | 2003-10-28 |
| 5047628 | Hybrid switch with solid-state condition | Ronald V. Schmidt, John C. Jones | 1991-09-10 |