Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4884400 | Exhaust manifold of internal combustion engine | Yutaka Tasaki | 1989-12-05 |
| 4848050 | Foundation for wooden buildings and construction method thereof | — | 1989-07-18 |
YT
Yoshimasa Tanaka
Overall (1989): #12,260 of 140,708Top 9%
2
Patents 1989