Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4829948 | Valve operating device for internal combustion engine | Kazuo Yoshida, Kenji Hirose, Toshiyasu Komatsu, Kazuaki Shimoyama | 1989-05-16 |
YT
Yoshihito Tsuji
Overall (1989): #40,088 of 140,708Top 30%
1
Patents 1989