Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12318566 | Tattoo machine rechargeable battery unit with voltage controller | Robert Smead, Dahao Xuan | 2025-06-03 |
| 11944773 | Tattoo machine rechargeable battery unit with voltage controller | Robert Smead, Dahao Xuan | 2024-04-02 |
| 11559675 | Tattoo machine rechargeable battery unit with voltage controller | Robert Smead, Dahao Xuan | 2023-01-24 |
| 11471658 | Tattoo machine rechargeable battery unit with voltage controller | Robert Smead, Dahao Xuan | 2022-10-18 |
| 11406807 | Tattoo machine rechargeable battery unit with voltage controller | Robert Smead, Dahao Xuan | 2022-08-09 |
| 5601387 | Depth adjusting system for a power tool | Ashok S. Subramanian | 1997-02-11 |
| 5538089 | Power tool clutch assembly | — | 1996-07-23 |