Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7946362 | Matrix drill bits with back raked cutting elements | Nuno Da Silva, Valerie Sillen | 2011-05-24 |
| 7621349 | Drill bit with a fixed cutting structure | Nuno Da Silva | 2009-11-24 |