Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5850462 | Speaker component, speaker, and its manufacturing method | Yoshio Sakamoto | 1998-12-15 |
| 5717775 | Voice coil and loudspeaker structure | Yoshio Sakamoto | 1998-02-10 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5850462 | Speaker component, speaker, and its manufacturing method | Yoshio Sakamoto | 1998-12-15 |
| 5717775 | Voice coil and loudspeaker structure | Yoshio Sakamoto | 1998-02-10 |