Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7913777 | Rock drill | Wolfgang Rieger | 2011-03-29 |
| 7401667 | Multi-purpose drilling tool | August Haussmann | 2008-07-22 |
| D525272 | Rotary impact drill bit | — | 2006-07-18 |
HD
Helmut Duscha
Overall (All Time): #1,559,823 of 4,157,543Top 40%
3
Patents All Time