Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4712614 | Liner hanger assembly with combination setting tool | Roger P. Allwin | 1987-12-15 |
| 4681159 | Setting tool for a well tool | Roger P. Allwin | 1987-07-21 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4712614 | Liner hanger assembly with combination setting tool | Roger P. Allwin | 1987-12-15 |
| 4681159 | Setting tool for a well tool | Roger P. Allwin | 1987-07-21 |