Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4351282 | Ignition timing control system for internal combustion engine | Hiroo Utsumi, Yukio Sakakibara, Teruyoshi Ito, Takashi Yamada | 1982-09-28 |
| 4344014 | Ignition spark plug | Tadashi Hattori | 1982-08-10 |