Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4917538 | Tunnel lining process and apparatus therefor | Shigetoshi Koga, Yoshio Hosokawa, Hideo Sueki, Mikio Okano, Ryota FUJIWARA +1 more | 1990-04-17 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4917538 | Tunnel lining process and apparatus therefor | Shigetoshi Koga, Yoshio Hosokawa, Hideo Sueki, Mikio Okano, Ryota FUJIWARA +1 more | 1990-04-17 |