Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8434564 | Power tool | David C. Tomayko, Qiang Zhang, Mark R. Poetzl | 2013-05-07 |
| 8251158 | Multi-speed power tool transmission with alternative ring gear configuration | David C. Tomayko, Qiang Zhang, Mark R. Poetzl | 2012-08-28 |