Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7413034 | Steering tool | Kennedy J. Kirkhope, Paul Rieder, Lisa Yung, Richard Thomas Hay | 2008-08-19 |
| 6328119 | Adjustable gauge downhole drilling assembly | Ian Gillis, Laurier E. Comeau, Charles M. Reid, Paul Donald Roberts, Christopher Konschuh +2 more | 2001-12-11 |
| 6158533 | Adjustable gauge downhole drilling assembly | Ian Gillis, Laurier E. Comeau, Charles M. Reid, Paul Donald Roberts | 2000-12-12 |
| 4599056 | Universal joint and progressive cavity transducer using the same | — | 1986-07-08 |
| 4531766 | Releasable couplings for drill strings | — | 1985-07-30 |
| 4452472 | Tubular safety joint for drill strings | — | 1984-06-05 |
| 4386666 | In-hole motor drill with locking bit clutch | John E. Tschirky | 1983-06-07 |
| 4295535 | In-hole motor drill with locking bit clutch | Kurt M. Trzeciak | 1981-10-20 |
| 4260202 | Bearing assembly | Kurt M. Trzeciak | 1981-04-07 |
| 4240683 | Adjustable bearing assembly | — | 1980-12-23 |
| 4220380 | Bearing assembly | Kurt H. Trezeciak, John E. Tschirky | 1980-09-02 |
| 4198104 | Adjustable stacked bearing assembly | — | 1980-04-15 |