Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5086456 | Dial unit detachably mounted on public telephone for equal access | Katsuhiro Taka, Hiroshi Ogihara | 1992-02-04 |
| 4837814 | Telephone set | Yutaka Yoshino, Makoto Gotoh, Osamu Fujimoto | 1989-06-06 |