Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7934319 | Pencil-sharpening device | Michael Peterson, Larry Buchtmann, Stuart David Farnworth | 2011-05-03 |
| D259620 | Fastening device for tie down straps on tarpaulins and the like | — | 1981-06-23 |
| 4248475 | Bow assembly for truck bed covers | — | 1981-02-03 |
| 4212492 | Roll-up truck bed cover | — | 1980-07-15 |