Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8065935 | Method of manufacturing a rotary drill bit | L. Richard Borremans, Robert J. Costo, Jr., James L. Duggan | 2011-11-29 |
| 8011456 | Rotationally indexable cutting elements and drill bits therefor | — | 2011-09-06 |