Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7506705 | Method of producing downhole drill bits with integral carbide studs | Kristin Brandenberg, John R. Keough, Gerald Wurtsmith | 2009-03-24 |
| 6799648 | Method of producing downhole drill bits with integral carbide studs | Kristin Brandenberg, John R. Keough, Gerald Wurtsmith | 2004-10-05 |
| 5849114 | Method of forming plate-type track shoe | John R. Keough, John B. Wagner | 1998-12-15 |