Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6709065 | Rotary cutting bit with material-deflecting ledge | Timothy J. Shean | 2004-03-23 |
| 6270165 | Cutting tool for breaking hard material, and a cutting cap therefor | — | 2001-08-07 |
| 5996715 | Mine roof drill bit and cutting insert therefor | David A. McCloskey, Jan Andersson | 1999-12-07 |
| 5829540 | Mine roof drill bit and cutting insert therefor | David A. McCloskey, Jan Andersson | 1998-11-03 |
| 5375672 | Mine roof drill bit and cutting insert therefor | Jan Akerman | 1994-12-27 |
| 5301763 | Apparatus for drilling holes in mine roofs and a roof drill bit for use therein | Lawrence E. Gray | 1994-04-12 |