Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5672186 | Method of making an abrasive article | Donald R. Bell, Harold E. Rude, William F. Sheffield, David F. Slama, Alan N. Stephens | 1997-09-30 |
| 5667540 | Method of making an abrasive article | Donald R. Bell, Harold E. Rude, William F. Sheffield, David F. Slama, Alan N. Stephens | 1997-09-16 |
| 5607345 | Abrading apparatus | John L. Barry, Donald R. Bell, Harold E. Rude, William F. Sheffield, David F. Slama +1 more | 1997-03-04 |