Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4844023 | Valve operating device for internal combustion engine | Tsuneo Konno | 1989-07-04 |
TS
Takashi Sugai
Overall (1989): #52,310 of 140,708Top 40%
1
Patents 1989