Issued Patents 1982
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4352961 | Transparent flat panel piezoelectric speaker | Akio Kumada | 1982-10-05 |
| 4330816 | Overcurrent protection apparatus | Ryoji Imazeki, Masayuki Hattori | 1982-05-18 |
| 4323148 | Coin selector for vending machine | Susumu Nichimoto, Isao Shinoda, Haruhide Tsumura | 1982-04-06 |
| 4321525 | Reference voltage generating circuit in a DC power supply | Ryoji Imazeki, Masayuki Hattori | 1982-03-23 |