Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10743109 | Ordered picklist for liquid transfer | Nicholas John Campbell | 2020-08-11 |
| 5386634 | Means for preventing the interchanging of cutting head assemblies with unsuitable clipper bodies and vice versa | Frank L. Ogle, Kenneth M. Campbell | 1995-02-07 |
| 5070830 | Powertrain and stiffening bracket therefor | David F. Malven, Richard Park Andersen | 1991-12-10 |
| 4827881 | Engine oil pump | Albert B. Nelson | 1989-05-09 |