Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6062328 | Electric handcart | Jeffery D. Campbell | 2000-05-16 |
| 6056065 | Motorized auger | Jeffery D. Campbell | 2000-05-02 |
| 5878827 | Motorized wheelbarrow | — | 1999-03-09 |
| 5868494 | Wheeled motorized mixer | Jeffery D. Campbell | 1999-02-09 |