Issued Patents 2011
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8028732 | Tire inflation system | Calvin Burgess, Michael H. Penwell, Patrick E. Roberts | 2011-10-04 |
| 7975739 | Rotary union assembly for use in air pressure inflation systems for tractor trailer tires | — | 2011-07-12 |
| 7963159 | Inflation system for tires | Calvin Burgess, Michael H. Penwell, Patrick E. Roberts | 2011-06-21 |
| 7896045 | Apparatus for delivering air through powered axle assemblies | John B. Solie, Marvin L. Stone | 2011-03-01 |