Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9316072 | Valve for communication of a measurement while drilling system | John P. Rogers, Stephen D. Bonner, Eugene J. Linyaev | 2016-04-19 |
| 5044017 | Helmet retainers operated by rotary handles | William S. Millard | 1991-09-03 |