Issued Patents All Time
Showing 26–27 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4192135 | Portable electronic device | Fukuo Sekiya, Takashi Yamada | 1980-03-11 |
| 4190892 | Zero suppressing system for electronic device | Fukuo Sekiya, Takashi Yamada | 1980-02-26 |