Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886320 | Vital pressure regulating system for railroad cars | Kazutaka Nagata | 1989-12-12 |
| 4885693 | Wheel-slip detection system | Tatsuo Fujiwara, Shuichi Osaka | 1989-12-05 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886320 | Vital pressure regulating system for railroad cars | Kazutaka Nagata | 1989-12-12 |
| 4885693 | Wheel-slip detection system | Tatsuo Fujiwara, Shuichi Osaka | 1989-12-05 |