Issued Patents 2020
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D880871 | Handle for toothbrush | Chun Yuan, Bart Johannes Massee | 2020-04-14 |
| D875403 | Tooth brush handle with brush head | Chun Yuan, Bart Johannes Massee | 2020-02-18 |
| D874830 | Handle for toothbrush | Chun Yuan, Bart Johannes Massee | 2020-02-11 |