Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7522831 | Charging device for camera flash | Wei Du | 2009-04-21 |
| 7499636 | Method for automatically coordinating flash intensity and camera system as the same | Du Wei Jia | 2009-03-03 |