Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4475230 | Hearing aid | Takuo Yamamoto, Hiromi Masaike | 1984-10-02 |
| 4361733 | Hard-of-hearing aid appliance | Yozo Marutake, Tatsuro Fukutome, Yasuo Inaba | 1982-11-30 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4475230 | Hearing aid | Takuo Yamamoto, Hiromi Masaike | 1984-10-02 |
| 4361733 | Hard-of-hearing aid appliance | Yozo Marutake, Tatsuro Fukutome, Yasuo Inaba | 1982-11-30 |