Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4873957 | Throttle valve control apparatus | Yoshiaki Asayama | 1989-10-17 |
| 4872435 | Throttle valve controlling apparatus including relative position limiting means for throttle valves | Yoshiaki Asayama | 1989-10-10 |