Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4210215 | Rock drill with helical dust conveying groove | Wolfgang Peetz | 1980-07-01 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4210215 | Rock drill with helical dust conveying groove | Wolfgang Peetz | 1980-07-01 |