Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7500679 | Board for supporting front of snow vehicle | — | 2009-03-10 |
| D505897 | Extendible automotive mirror | — | 2005-06-07 |
| D490035 | Universal hitch mirror | — | 2004-05-18 |
| D458569 | Universal towing mirror | Terry M. Birchler, Douglas D. Hansel, Brian J. Conaway, Kristen K. Hedstrom, Thomas G. Sieber | 2002-06-11 |
| D456330 | Fender mirror | — | 2002-04-30 |
| 4346790 | Articulated car brake system | Robert Morrison, Robert E. Zimmerman | 1982-08-31 |