Issued Patents 2011
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7954565 | Thread retention for an earth boring device | — | 2011-06-07 |
| 7938205 | Boring head method and boring head for a ground boring device | — | 2011-05-10 |
| 7874382 | Pneumatically reversible ram boring device | Gerhard Balve | 2011-01-25 |