Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5201302 | Voltage regulator tube for ignition system of internal combustion engine | Nobuto Tsujikawa | 1993-04-13 |
| 5072153 | Discharge tube for ignition apparatus | Nobuto Tsujikawa, Kazuhisa Mogi | 1991-12-10 |