Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4837814 | Telephone set | Makoto Gotoh, Osamu Fujimoto, Masahiro Shizawa | 1989-06-06 |
| D301036 | Wall mount, coin-operated, public telephone | Hiroyuki Yamazaki, Makoto Gotoh | 1989-05-09 |