Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5468099 | Seam tracking drilling machine | David A. Schaller | 1995-11-21 |
| 5383751 | Manually positioned computer controlled drilling machine | James W. Shelby | 1995-01-24 |
| 5006021 | High pressure gas drilling | — | 1991-04-09 |
| 4778317 | Tactile sensing tool positioning system | George A. Earle, III, Richard D. Button | 1988-10-18 |