Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5779085 | Expandable pin plug for automated use | Kenneth L. Havlinek, Thomas D. MacDougall | 1998-07-14 |
| 5746279 | Method and apparatus for changing bits while drilling with a flexible shaft | Kenneth L. Havlinek, Thomas D. MacDougall, Alan J. Sallwasser, Miles Jaroska, Duane LaDue +4 more | 1998-05-05 |
| 5687806 | Method and apparatus for drilling with a flexible shaft while using hydraulic assistance | Alan J. Sallwasser, Kenneth L. Havlinek, Thomas D. MacDougall, Miles Jaroska, Duane LaDue +4 more | 1997-11-18 |