Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4765210 | Hydraulically powered screwing means | Hans-Bernd Mierbach, Gustav Frohn | 1988-08-23 |
| 4709600 | Power screw driver with a ratchet wheel having finely graduated toothing | Hans-Bernd Mierbach, Gustav Frohn | 1987-12-01 |