Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5861802 | Fifth wheel hitch coupling control system | Gerald W. Hungerink, Ronald D. Ingraham | 1999-01-19 |
| 5522613 | Self lubicating fifth wheel hitch | — | 1996-06-04 |
| 5054805 | Trailer landing gear cushion foot | Gerald W. Hungerink | 1991-10-08 |