Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D305761 | Combined tape recorder, digital audio disc player and radio | Tsutomu Yamasaki | 1990-01-30 |
| D305540 | Combined tape recorder and radio | Tsutomu Yamasaki | 1990-01-16 |
| D297833 | Combined tape recorder and radio | Tsutomu Yamasaki | 1988-09-27 |
| D297834 | Combined tape recorder digital audio player and radio | Tsutomu Yamasaki | 1988-09-27 |
| D259487 | Combined clock radio and television receiver | Naoki Wada, Tomitaro Saito, Seiji Usami, Koji Satake | 1981-06-09 |