Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7731544 | U-shaped electrical connector spring devices and methods | Jianfeng Ma | 2010-06-08 |
| 7553180 | Locking device | Jianfeng Ma | 2009-06-30 |
| 7530858 | Electrical junction systems and methods | Jianfeng Ma | 2009-05-12 |
| 7484988 | Connector clamping systems and methods | Jianfeng Ma | 2009-02-03 |