Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4732219 | Hammer drill with pneumatically driven percussion piston | — | 1988-03-22 |
| 4611670 | Motor driven drilling or chipping device | — | 1986-09-16 |
| 4366869 | Hammer drill | Rolf Bereiter | 1983-01-04 |
| 4222443 | Motor-driven hammer drill | — | 1980-09-16 |