Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6131672 | Percussive down-the-hole rock drilling hammer and piston therefor | Rainer Beccu, Kenneth Ahlhorn | 2000-10-17 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6131672 | Percussive down-the-hole rock drilling hammer and piston therefor | Rainer Beccu, Kenneth Ahlhorn | 2000-10-17 |