Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5043697 | Apparatus for deciding engine-oil replacing time for an automobile | Kouichi Ayabe | 1991-08-27 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5043697 | Apparatus for deciding engine-oil replacing time for an automobile | Kouichi Ayabe | 1991-08-27 |