Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6634443 | Drill rod handling device | Stephen Muller | 2003-10-21 |
| 5183366 | Rod handler apparatus | — | 1993-02-02 |
| 5105687 | Built-in rack apparatus | — | 1992-04-21 |
| 4408766 | Rotary seal apparatus with dual self-centering annular face seals | — | 1983-10-11 |