Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4774861 | Drill pipe spinner | William R. Hamilton | 1988-10-04 |
| 4613849 | Interference warning device | Roger D. Smith, Joseph R. Priest, Faustyn C. Langowski | 1986-09-23 |
| 4603464 | Stand jumping and stabbing guide device and method | Roger D. Smith | 1986-08-05 |