Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4868065 | Alloy tool of hard metal | Masao Maruyama, Yoshihiro Minato | 1989-09-19 |
AS
Atsushi Seki
Overall (1989): #130,449 of 140,708Top 95%
1
Patents 1989