Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4627416 | Water heater | Hiroshi Ito, Kanae Aida, Masahiko Koumura, Kazumi Tamada, Katsushi Mizutani | 1986-12-09 |
| 4229619 | Method and apparatus for driving a multi way speaker system | Nobuaki Takahashi, Eiichi Funasaka, Yasuo Kaizu | 1980-10-21 |