Issued Patents 2011
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8085967 | Reversible speaker grill attachment | Yoichiro Sumitani | 2011-12-27 |
| 7970162 | Loudspeaker bobbin interconnection assembly | Yoichiro Sumitani | 2011-06-28 |
| 7899202 | Loudspeaker with cone-coupled damper | Yoichiro Sumitani | 2011-03-01 |