Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4794893 | Engine valve driving apparatus | Tatsuya Uesugi, Hiroyuki Oda | 1989-01-03 |
SM
Shunji Masuda
Overall (1989): #57,407 of 140,708Top 45%
1
Patents 1989