Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5692949 | Back-up pad for use with abrasive articles | William F. Sheffield, David F. Slama | 1997-12-02 |
| 5607345 | Abrading apparatus | Donald R. Bell, Jason A. Chesley, Harold E. Rude, William F. Sheffield, David F. Slama +1 more | 1997-03-04 |