Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7637296 | Pneumatic driver tire for tracked vehicle | Mark Leonard Bonko, Paul John Peterson | 2009-12-29 |
| D505108 | Tire tread | Mark Leonard Bonko, Paul John Peterson | 2005-05-17 |
| 5934652 | Air spring bumper and method of mounting | Gregory Dean Hofacre, Mark Trowbridge | 1999-08-10 |
| 5535994 | Composite air spring piston | — | 1996-07-16 |
| 4749345 | Mold for airspring rubber membrane | Ivan J. Warmuth, II | 1988-06-07 |
| 4673168 | Airspring and a method for making airspring flexible members | Ivan J. Warmuth, II | 1987-06-16 |