Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4479564 | System and method for monitoring drill string characteristics during drilling | — | 1984-10-30 |
| 4359898 | Weight-on-bit and torque measuring apparatus | Larry J. Leising | 1982-11-23 |
| 4303994 | System and method for monitoring drill string characteristics during drilling | — | 1981-12-01 |
| 4223746 | Shock limiting apparatus | Larry J. Leising | 1980-09-23 |