Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10514040 | Vacuum system | James Alexander Haylock, Richard Lee Harkin, Ian Keech | 2019-12-24 |
| 9512603 | Flushing mechanism | Feiyu Li, Laicong Hong | 2016-12-06 |
| 8978208 | Folding mechanism | Wu-Qi Li | 2015-03-17 |
| 5655249 | Toothbrush with concave brushing surface | — | 1997-08-12 |