Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11207848 | Buffering gas cushion machine | Kuangshu Si, Yuan Li, Guian Si | 2021-12-28 |
| D842352 | Bag or sack filling machine | Kuangshu Si, Yuan Li, Guian Si | 2019-03-05 |
| D798352 | Bag or sack filling machine | Kuangshu Si, Guian Si, Yuan Li | 2017-09-26 |