Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7261177 | Pneumatic locking pin operating system for a trailer slider | — | 2007-08-28 |
| 6439586 | Spring band for an axle assembly | — | 2002-08-27 |
| 6435536 | Operating system for locking pins for sliding undercarriages | — | 2002-08-20 |
| 6384716 | Trailer slider repositioning alarm | — | 2002-05-07 |
| 6263801 | Multi-mode trailer suspension system for use with rail bogies | — | 2001-07-24 |
| 6213489 | Operating system for locking pins for sliding undercarriages | — | 2001-04-10 |
| 6199876 | Vehicle trailer suspension stabilizer and lift system | — | 2001-03-13 |
| 4775166 | Vehicle suspension beam-to-axle connection | Ervin K. VanDenberg | 1988-10-04 |
| 4573704 | Internal lift axle suspension system | Ervin K. VanDenberg | 1986-03-04 |