Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8763728 | Percussion assisted rotary earth bit and method of operating the same | James W. Langford, Jr. | 2014-07-01 |
| 8627903 | Percussion assisted rotary earth bit and method of operating the same | James W. Langford, Jr. | 2014-01-14 |
| 8353369 | Percussion assisted rotary earth bit and method of operating the same | James W. Langford, Jr. | 2013-01-15 |
| 7258833 | High-energy cascading of abrasive wear components | John F. Kita | 2007-08-21 |