Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9302891 | Powered auxiliary hoist mechanism for a gantry crane | Jerry J. Wierzba | 2016-04-05 |
| 7926671 | Powered auxiliary hoist mechanism | Jerry J. Wierzba | 2011-04-19 |
| 7913864 | Panel turner for a gantry crane | Jerry J. Wierzba | 2011-03-29 |
| 7546929 | Powered auxiliary hoist mechanism for a gantry crane | Jerry J. Wierzba | 2009-06-16 |
| 7451883 | Panel turner for gantry crane | Jerry J. Wierzba | 2008-11-18 |
| 6675719 | Railroad car wheel handler and method | Thomas Feider | 2004-01-13 |
| 6634305 | Seed planting system | — | 2003-10-21 |