Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9328810 | Variable ratio gearmotor with interactive ratio control | — | 2016-05-03 |
| 7661490 | Stabilizing system and methods for a drill bit | — | 2010-02-16 |
| 7201237 | Stabilizing system and methods for a drill bit | — | 2007-04-10 |
| 6971459 | Stabilizing system and methods for a drill bit | — | 2005-12-06 |
| 6001042 | Continuously variable transmission with ratio synchronizing system | — | 1999-12-14 |
| 4856601 | Drill bit with flow control means | — | 1989-08-15 |
| 4842083 | Drill bit stabilizer | — | 1989-06-27 |
| 4690229 | Radially stabilized drill bit | — | 1987-09-01 |
| 4684810 | X-ray shield for fluorescent light tube | Ina E. Fisher | 1987-08-04 |