Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4701682 | Control system for maintaining traction of rolling stock | Tetsuji Hirotsu, Hisakatsu Kiwaki, Kiyoshi Nakamura, Hiroshi Narita, Akira Kimura +1 more | 1987-10-20 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4701682 | Control system for maintaining traction of rolling stock | Tetsuji Hirotsu, Hisakatsu Kiwaki, Kiyoshi Nakamura, Hiroshi Narita, Akira Kimura +1 more | 1987-10-20 |