Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4877420 | Halogen-containing fillers for abrasive bodies, in particular for grinding wheels or cutting wheels, to a process for the production of these fillers and to abrasive bodies containing them | Helmut Stessel | 1989-10-31 |