Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4871146 | Apparatus for heat treatment of steel rods | Katsuhiko Yamada, Kunio Ojima, Takashi Asakura, Yusuke Yamamori | 1989-10-03 |
YN
Yukihiro Nakamura
Overall (1989): #39,478 of 140,708Top 30%
1
Patents 1989