Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5307786 | Ignition apparatus for an internal combustion engine | Shigemi Murata | 1994-05-03 |
| 5293129 | Ionic current sensing apparatus for engine spark plug with negative ignition voltage and positive DC voltage application | Shigemi Murata, Toshio Iwata, Toshio Ohsawa, Takanobu Yonetsu | 1994-03-08 |