Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880091 | Control circuit for fluid coupling with lock-up clutch | Hiromi Hasegawa | 1989-11-14 |
| 4870877 | Hydraulic control circuit for automatic transmission | Hiromi Hasegawa | 1989-10-03 |
| 4843909 | Automatic transmission control method | Hiromi Hasegawa | 1989-07-04 |
| 4828084 | Control circuit for fluid coupling with high-gear clutch | Hiromi Hasegawa | 1989-05-09 |