Issued Patents 2004
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6731773 | Dual basket speaker with replaceable, self-aligning cone assembly and super ventilated pole piece | Zhijun Zhao | 2004-05-04 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6731773 | Dual basket speaker with replaceable, self-aligning cone assembly and super ventilated pole piece | Zhijun Zhao | 2004-05-04 |