Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10195976 | Spreader with removable material transportation mechanism | Spencer J. Null, Vladimir Feldman, Douglas E. Metcalf, Robert W. Wood, Randal M. Wolf | 2019-02-05 |
| 4875524 | Casing centralizer | Billie J. Bradley, Richard L. Giroux | 1989-10-24 |