Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11344171 | Floor surface cleaning machine and cleaning method using the same | Ching-Yun Kung, Mao-Yi Lee | 2022-05-31 |
| D709255 | Self-propelled cleaning device | Hui-Chen Chen | 2014-07-15 |