Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D563005 | Flashlight | Gregory Michael Tow, Sze Kok Scott Fong, Justin Matuszek | 2008-02-26 |
| D507730 | Rotary tool | Michael Landt, Walter Bernardi, John Van Akkeren, Todd A. Zeilinger, Bryan E. Rolfs | 2005-07-26 |
| 6846231 | Removable sharpening attachment for a rotary hand tool | Edward T. Prell, Frank Honold | 2005-01-25 |
| 6713905 | Electric-motor rotary power tool having a light source with a self-generating power supply | Wolfgang Hirschburger | 2004-03-30 |
| D483636 | Engraver | Matthew J. Oblak, Todd A. Zeilinger, David Iverson, John Van Akkeren | 2003-12-16 |
| D469671 | Cordless electric rotary hand tool | Edward T. Prell, Frank Sterpka, David C. Danielson | 2003-02-04 |
| 6463824 | Right angle attachment for power hand tool | Edward T. Prell, Wolfgang Hirschburger | 2002-10-15 |
| 6380502 | Detented slide switch mechanism | Wolfgang Hirschburger, Edward T. Prell, Edward G. Ennis | 2002-04-30 |