Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6305754 | Tunnel excavator with S-shaped soil plate | Toshiaki Uehara, Takanobu Miki | 2001-10-23 |
| 6206478 | Tunnel excavator with crawler drive and roof support bearing frames | Toshiaki Uehara, Takanobu Miki | 2001-03-27 |