Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4264789 | Voice coil assembly for a speaker | Kiyoshi Saito | 1981-04-28 |
| 4229619 | Method and apparatus for driving a multi way speaker system | Nobuaki Takahashi, Eiichi Funasaka, Masanobu Shinozaki | 1980-10-21 |