Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4381188 | Grinding disk | Walter Waizer, Harald Helletsberger, Volker Selgrad | 1983-04-26 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4381188 | Grinding disk | Walter Waizer, Harald Helletsberger, Volker Selgrad | 1983-04-26 |