Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9028681 | Drainage device for closed chamber containing liquid | Ming-Lu Yang, Ya-Dong Zhang, Yue Li | 2015-05-12 |
| 8978577 | Waxing device | Ming-Lu Yang, Ya-Dong Zhang, Tian-En Zhang | 2015-03-17 |