Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12322418 | Vinyl record player automatic stop and lift tonearm structure | Shen-Keng Liu, Chang Lu | 2025-06-03 |
| 9997175 | Electric arm lifting and turntable's auto-stop assembly of record player | Shen-Keng Liu | 2018-06-12 |