Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4550638 | Portable keyboard-type musical instrument | Takeshi Hattori, Kensaku Hakamata, Satoru Hayashi, Takayuki Goshima, Masakazu Matsumoto | 1985-11-05 |
| 4378721 | Pickup apparatus for an electric string type instrument | Katsuyuki Tanaka, Satoru Hayashi, Kensaku Hakamada, Masakazu Matsumoto, Shinji Tagaki +1 more | 1983-04-05 |