Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D300926 | Key telephone set | Masafuku Akatsu, Tatsuya Kato, Seizo Ohta, Takeshi Nakatani | 1989-05-02 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D300926 | Key telephone set | Masafuku Akatsu, Tatsuya Kato, Seizo Ohta, Takeshi Nakatani | 1989-05-02 |