Issued Patents 2018
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10160439 | Power efficiency control mechanism for a working machine | Hao Zhang, Raymond Collett, Blake Carl | 2018-12-25 |
| 9926946 | Hydraulic hybrid swing drive system for excavators | Jeff Cullman, Hao Zhang, Richard D. Kimpel, Raymond Collett, Bogdan Kozul | 2018-03-27 |