Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11959336 | Drilling system and method of using same | — | 2024-04-16 |
| 11499376 | Drilling system and method of using same | — | 2022-11-15 |
| 7182156 | System for overburden drilling | Roger Charland | 2007-02-27 |
| D505435 | Crown bit | Roger Charland | 2005-05-24 |
| D504141 | Driver drill bit | Roger Charland | 2005-04-19 |
| D496948 | Square drill bit | Roger Charland | 2004-10-05 |