Issued Patents 2017
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9809958 | Engine assist by recovering swing kinetic energy | Dayao Chen, Pengfei Ma | 2017-11-07 |
| 9556591 | Hydraulic system recovering swing kinetic and boom potential energy | Jiao Zhang, Pengfei Ma, Dayao Chen | 2017-01-31 |