Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5531250 | Device for plugging the interior of a pipe | Eric N. Freeman, David Blevins, Gene R. Ralls, Bill D. Andrew, Buddy A. Wilson | 1996-07-02 |
| 4880028 | Completion machine | James B. Sullivan | 1989-11-14 |