Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7143846 | Method for drilling and drilling apparatus to enable reverse circulation | Vesa Järvelä | 2006-12-05 |
| 5590726 | Drilling apparatus | Vesa Järvelä | 1997-01-07 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7143846 | Method for drilling and drilling apparatus to enable reverse circulation | Vesa Järvelä | 2006-12-05 |
| 5590726 | Drilling apparatus | Vesa Järvelä | 1997-01-07 |