Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8323072 | Method of polishing transparent armor | Daniel A. Billig, James L. McArdle, Ann M. Hawkins | 2012-12-04 |
| 6638144 | Method of cleaning glass | Bruce A. Sventek, Craig F. Lamphere, Timothy L. Graf | 2003-10-28 |
| 5962102 | Loop material for engagement with hooking stems | William F. Sheffield, David F. Slama | 1999-10-05 |
| 5725423 | Abrading apparatus | Donald R. Bell, Jason A. Chesley, Harold E. Rude, William F. Sheffield, David F. Slama +1 more | 1998-03-10 |
| 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 |
| 5354591 | Coated abrasive sheet material with loop material for attachment incorporated therein | Ronald L. Ott, Michael R. Gorman, Dennis L. Becker, Donald W. Folske, William L. Melbye +3 more | 1994-10-11 |
| 5254194 | Coated abrasive sheet material with loop material for attachment incorporated therein | Ronald L. Ott, Michael R. Gorman, Dennis L. Becker, Donald W. Folske, William L. Melbye +3 more | 1993-10-19 |