Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8070240 | Sprocketed drive assembly for track-type machine | Jianping Zheng, David F. Schaefer, Selvaraj Kuppannan | 2011-12-06 |
| 7905559 | Isolated center tread rim idler wheel | Xiangyang Jiang | 2011-03-15 |
| 7823990 | Sprocketed idler assembly | — | 2010-11-02 |
| 4773217 | Earthmoving machine | Francois Degraeve | 1988-09-27 |