Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5273388 | Lifting device for down hole tubulars | Clyde A. Willis | 1993-12-28 |
| 5259723 | Feeding device for down hole tubulars | Clyde A. Willis | 1993-11-09 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5273388 | Lifting device for down hole tubulars | Clyde A. Willis | 1993-12-28 |
| 5259723 | Feeding device for down hole tubulars | Clyde A. Willis | 1993-11-09 |