Issued Patents All Time
Showing 101–102 of 102 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4514599 | Speaker for automotive vehicle audio system having a vehicle panel serving as sound-amplifying medium | Takayuki Yanagishima | 1985-04-30 |
| 4499340 | Speaker for automotive audio system with vehicle panel utilized as sound amplifying medium | Takayuki Yanagishima, Akio Ajimine, Yoshiaki Murakami, Akimitsu Shino, Tatsuya Watanabe | 1985-02-12 |