Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11850673 | Button cell and method for welding electrode tabs to a pole shell of the button cell | Haitao Chang, Zhiming Zhang, Huazao XU | 2023-12-26 |
| 7546653 | Air mattress | — | 2009-06-16 |