Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4653236 | Coated abrasive disc | John R. Grimes | 1987-03-31 |
| 4554765 | Coated abrasive disc | John R. Grimes | 1985-11-26 |
| 4525177 | Method of making coated abrasive disc | John R. Grimes | 1985-06-25 |