Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D313239 | Typewriter | Kenji Tamada, Hideaki Itagaki | 1990-12-25 |
| D299248 | Typewriter | Kenji Tamada, Yojiro Fukui | 1989-01-03 |
| D299249 | Typewriter | Kenji Tamada, Yoshimitsu Nagashima | 1989-01-03 |
| D291323 | Typewriter | Kenji Tamada, Hideo Aoki | 1987-08-11 |
| D290616 | Typewriter | Kenji Tamada, Hideo Aoki | 1987-06-30 |
| D282178 | Typewriter | — | 1986-01-14 |
| D273117 | Typewriter for European languages | Kenji Tamada | 1984-03-20 |