Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7171737 | Safety barrier | Jan C. Mangelsen, John Christen, Harlon Neumann, Mike Skahill, Greg Judge | 2007-02-06 |
| 6891128 | Rotational flash guard and method of use | Jan C. Mangelsen, Alan M. Deitering, Michael P. Skahill, Jason J. Kelsick | 2005-05-10 |