Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6655481 | Methods for fabricating drill bits, including assembling a bit crown and a bit body material and integrally securing the bit crown and bit body material to one another | Sidney L. Findley, Trent N. Butcher | 2003-12-02 |
| 6454030 | Drill bits and other articles of manufacture including a layer-manufactured shell integrally secured to a cast structure and methods of fabricating same | Sidney L. Findley, Trent N. Butcher | 2002-09-24 |
| 6182774 | Bit torque limiting device | — | 2001-02-06 |