Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7887065 | Height control valve for vehicle leveling system | Mark W. Pierce | 2011-02-15 |
| 7389994 | Vehicle leveling system | Robert Sorum | 2008-06-24 |
| 7261304 | Vehicle leveling system | Robert Sorum | 2007-08-28 |
| 7126458 | Sliding axle alarm | Gary L. Schafer, Dick E. Winter, Robert Sorum | 2006-10-24 |
| 6857646 | Anti-roll suspension valve body | Robert Sorum, Gary L. Schafer, Dick E. Winter | 2005-02-22 |
| 6832143 | Drive train vibration control system | Robert Sorum | 2004-12-14 |
| 6669217 | Anti-roll suspension valve body | Robert Sorum, Gary L. Schafer, Dick E. Winter | 2003-12-30 |
| 6516741 | Leak proof apparatus for mounting components to panels | Robert Sorum, Gary L. Schafer | 2003-02-11 |
| 5860450 | Height control valve for vehicle leveling system | Gary L. Schafer | 1999-01-19 |
| 5560591 | Leveling valve for air springs | Gary L. Schafer, Dick E. Winter, Dennis S. Shimmell, Sr., Sean Seaver | 1996-10-01 |
| 4700804 | Seismic energy source | — | 1987-10-20 |
| 4226437 | Axle-load distributing apparatus | — | 1980-10-07 |