Issued Patents 2022
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11471658 | Tattoo machine rechargeable battery unit with voltage controller | Christopher Sanford, Dahao Xuan | 2022-10-18 |
| 11406807 | Tattoo machine rechargeable battery unit with voltage controller | Christopher Sanford, Dahao Xuan | 2022-08-09 |