Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4475739 | Piston ring assembly for automotive internal combustion engine | Yasuo Nakajima, Shinichi Nagumo, Yoshifumi Hase | 1984-10-09 |
TG
Takaharu Gotoh
Overall (All Time): #4,042,170 of 4,157,543Top 100%
1
Patents All Time