Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7374507 | Lubrication system for differential mechanism | Gerald S. Szczepanski, William Myles Riley | 2008-05-20 |
| 5888165 | Multiple-speed axle mechanism | Ernie Besler, John H. Tanzer | 1999-03-30 |
| 5538482 | Multiple-speed axle mechanism providing overdrive and direct drive | John H. Tanzer, Ernie Besler, Suresh C. Bansal | 1996-07-23 |