Issued Patents 2018
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10024341 | Hydraulic hybrid swing drive system for excavators | Hao Zhang, Raymond Collett, James Howland, Nick White, Patrick Stegemann | 2018-07-17 |
| 9926946 | Hydraulic hybrid swing drive system for excavators | Hao Zhang, Richard D. Kimpel, Zhesheng Jiang, Raymond Collett, Bogdan Kozul | 2018-03-27 |