Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9297210 | Earth removal member with features for facilitating drill-through | Eric M. Twardowski, Albert C. Odell, II, Guy F. Feasey, Sharp Okorie Ugwuocha | 2016-03-29 |
| 9027643 | Method of removing cutters | Eric M. Twardowski, Ming Zo Tan | 2015-05-12 |
| 8528669 | Earth removal member with features for facilitating drill-through | Eric M. Twardowski, Albert C. Odell, II, Guy F. Feasey, Sharp Okorie Ugwuocha | 2013-09-10 |
| 8074749 | Earth removal member with features for facilitating drill-through | Eric M. Twardowski, Albert C. Odell, II, Guy F. Feasey, Sharp Okorie Ugwuocha | 2011-12-13 |