Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8758089 | Abrasive articles, rotationally reciprocating tools, and methods | Michael J. Annen | 2014-06-24 |
| 8057281 | Methods of removing defects in surfaces | Michael J. Annen, Lowell W. Holland, Adam M. Spah | 2011-11-15 |
| D610430 | Stem for a power tool attachment | Peter J. Fritz, Nathan A. Abel, Matthew D. Chaffee, Michael J. Annen, Adam M. Spah +1 more | 2010-02-23 |
| D606827 | Small, portable power tool | Peter J. Fritz, Michael J. Annen, Nathan A. Abel, Adam M. Spah, Matthew D. Chaffee +3 more | 2009-12-29 |
| 7618306 | Conformable abrasive articles and methods of making and using the same | James Schutz, Gregory A. Koehnle, Michael J. Annen, Albert I. Everaerts | 2009-11-17 |