Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5468176 | Disk-shaped tool bit for an angle grinder | Walter Winkler | 1995-11-21 |
| 5406929 | Grinding tool bit | Johann Dorfmeister | 1995-04-18 |
| 4235151 | Expansion dowel | Hans Oechsle, Heinz-Werner Pfeiffer | 1980-11-25 |