Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4354136 | Ignition plug for internal combustion engine | Kyugo Hamai, Meroji Nakai, Yasuhiko Nakagawa | 1982-10-12 |
RM
Ryuzaburo Maruyama
Overall (1982): #32,363 of 81,411Top 40%
1
Patents 1982