Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5692949 | Back-up pad for use with abrasive articles | William F. Sheffield, John L. Barry | 1997-12-02 |
| 5672186 | Method of making an abrasive article | Jason A. Chesley, Donald R. Bell, Harold E. Rude, William F. Sheffield, Alan N. Stephens | 1997-09-30 |
| 5667540 | Method of making an abrasive article | Jason A. Chesley, Donald R. Bell, Harold E. Rude, William F. Sheffield, Alan N. Stephens | 1997-09-16 |
| 5607345 | Abrading apparatus | John L. Barry, Donald R. Bell, Jason A. Chesley, Harold E. Rude, William F. Sheffield +1 more | 1997-03-04 |