Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888576 | Method and system for detecting the level of engine oil of an engine | Shin'ichi Kubota, Hideyo Miyano | 1989-12-19 |
| 4876529 | Method and system for detecting the level of engine oil of an engine | Shin'ichi Kubota, Hideyo Miyano | 1989-10-24 |