Issued Patents 2021
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11063399 | Powered tree construction | Yifeng Zhang | 2021-07-13 |
| 11045012 | Inflatable airbed mattress internal support system | Yifeng Zhang, Chaolong Lan, Minglian Ma | 2021-06-29 |
| 10935220 | Pool liner with LED light strings | Chaolong Lan | 2021-03-02 |