Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8479504 | Hydraulic system having an external pressure compensator | James A. Aardema, Pengfei Ma, Kalpesh Patel | 2013-07-09 |
| 8424836 | Bidirectional force feedback poppet valve | Pengfei Ma, James A. Aardema | 2013-04-23 |