Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8585535 | High torque capacity three output differential | Surendar Shawn Paul, Richard F. Olenzek, Zinovy Soybel, William James Duncan, Alvan J. Callahan +1 more | 2013-11-19 |
| 8083628 | Differential carrier assembly for a vehicle | Zinovy Soybel, William James Duncan, Alvan J. Callahan, Richard F. Olenzek | 2011-12-27 |