Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D499677 | Parking brake control valve button cover | Andrew Marsh | 2004-12-14 |
| 6769744 | Spring brake modulating relay valve | Andrew Marsh, Charles E. Eberling, Dave Knight, Richard T. Ross | 2004-08-03 |
| 6729696 | Two step park release valve | Andrew Marsh | 2004-05-04 |
| D485794 | Parking brake control valve button cover | Andrew Marsh | 2004-01-27 |