Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8292557 | Vehicle transporter | Donald R. Landoll, Loren F. Wassenberg, Phillip R. Landoll, Jim R. Ladner | 2012-10-23 |
| 6378887 | Gooseneck lift mechanism | Donald R. Landoll, Loren F. Wassenberg, Paul Roesner, Keith Vacha | 2002-04-30 |
| 6224082 | Cam action detachable gooseneck trailer | Donald R. Landoll, Loren F. Wassenberg, Paul Roesner, Keith Vacha | 2001-05-01 |
| 4746261 | Self-loading tilt-bed trailer having transverse bed realignment means | Donald R. Landoll, Alfred R. Belknap, Michael C. Domine | 1988-05-24 |
| 4630991 | Truck having tiltable front and rear frames | Donald R. Landoll, Joseph Bryan Morris | 1986-12-23 |