Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880591 | Method for manufacturing speaker vibration member | — | 1989-11-14 |
| 4831900 | System for controlling rate of speed change in automatic transmission | Koichi Yamamoto | 1989-05-23 |