Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886558 | Method for heat-treating steel rail head | Akio Fujibayashi, Kozo Fukuda, Mashiro Ueda, Shinichi Nagahashi, Yazuru Kataoka +5 more | 1989-12-12 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886558 | Method for heat-treating steel rail head | Akio Fujibayashi, Kozo Fukuda, Mashiro Ueda, Shinichi Nagahashi, Yazuru Kataoka +5 more | 1989-12-12 |