Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D462343 | Karaoke machine microphone | Lingtao Wang, Dion Dangzalan, Allen Yang Yang | 2002-09-03 |
| D461469 | Karaoke machine | Lingtao Wang, Dion Dangzalan, Allen Yang Yang | 2002-08-13 |