Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5049011 | Rotary boring tool with indexable cutter chips | Siegfried Bohnet | 1991-09-17 |
| 4367991 | Boring tool | Paul G. Held | 1983-01-11 |
| 4283163 | Cutting tool with replaceable edge cutting bit | Willy Schlotterer | 1981-08-11 |
| 4219292 | Rotary helical milling cutter with replaceable cutter bit elements | Friedrich Hoffmann, Siegfried Deiss, Willy Schlotterer | 1980-08-26 |