Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7128172 | Drill string for upward drilling and components therefor | Aimo Helin | 2006-10-31 |
| D416029 | Drill bit | — | 1999-11-02 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7128172 | Drill string for upward drilling and components therefor | Aimo Helin | 2006-10-31 |
| D416029 | Drill bit | — | 1999-11-02 |