Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8747034 | Boring head | Gottlieb Abderhalden, Ralph Stadelmann | 2014-06-10 |
| 7585139 | Boring tool | Ralph Stadelmann, Ernst Hänggi | 2009-09-08 |
| 7281888 | Tool for cutting machining | Heinz Kaiser, Ernst Hänggi | 2007-10-16 |
| 4955767 | Boring attachment | Heinz Kaiser | 1990-09-11 |