Issued Patents All Time
Showing 26–27 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4910780 | Audio signal recording and reproducing apparatus utilizing digital data compression and extension | — | 1990-03-20 |
| D259259 | Combined cassette tape recorder, radio and television receiver | Shigeki Masatsugu, Hirotsugu Misaka | 1981-05-19 |