Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4731723 | Power supply installation for DC electric railroad | Teiji Nogi, Tuneo Tamura, Hiroyasu Sato | 1988-03-15 |
| 4680663 | Power supply installation for dc electric railroad | Teiji Nogi | 1987-07-14 |