Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4973233 | Four-rotor type rotary piston engine | Noriyuki Kurio, Junichi Funamoto, Isao Shimizu | 1990-11-27 |
YM
Yoshitaka Matsumuro
Overall (All Time): #3,915,949 of 4,157,543Top 95%
1
Patents All Time