Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8336159 | Non-stepping wringer bucket | Yung-Hua Chen | 2012-12-25 |
| 8291544 | Mop with the function of dewatering the yarns by twisting in a single direction via an up-and-down linear motion | Yung-Hua Chen | 2012-10-23 |
| 8112840 | Disc rotating and positioning structure of a mop | Yung-Hua Chen | 2012-02-14 |