Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8517780 | Connector having a contact arm connected in between two connecting arms | Wei Yu, Haijun Zhang | 2013-08-27 |
| 6415774 | Intake air preheater for a diesel engine | Yiqun Liu | 2002-07-09 |