Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11565225 | Weighted well material distribution systems and methods | — | 2023-01-31 |
| 5507237 | Lifting apparatus for use with bulk bags | David A. Barrow | 1996-04-16 |
| 5303998 | Method of mixing and managing oil and gas well drilling fluids | David A. Barrow | 1994-04-19 |