Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5679067 | Molded abrasive brush | David E. Johnson, Lawrence J. Mann, Scott M. Mevissen, Richard M. Pihl | 1997-10-21 |
| D381139 | Molded abrasive brush | David E. Johnson, Richard M. Pihl | 1997-07-15 |
| 5640772 | Cutting tool and method for manufacture | Edward L. Manor, Shawn P. Crosby | 1997-06-24 |