Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6321758 | Tobacco leaf handling assembly | Donald J. Stewart | 2001-11-27 |
| 4876845 | Self propelled mower and towed mower with adjustable height connection | — | 1989-10-31 |
| 4521044 | Twistlock operator | William S. Appleman | 1985-06-04 |
| 4378072 | Gantry crane | William S. Appleman | 1983-03-29 |
| 4263979 | Hydraulic master-slave steering system for a wide track vehicle | — | 1981-04-28 |
| 4219094 | Straddle crane apparatus | — | 1980-08-26 |