Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D690241 | Trailer hitch lock | — | 2013-09-24 |
| 8151605 | Trailer lock | — | 2012-04-10 |
| 6925842 | King pin lock device | Duane E. Hillabush | 2005-08-09 |
| 6467317 | Lunette trailer hitch lock | Duane E. Hillabush | 2002-10-22 |