Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7186060 | Method and device for lining construction in sewer followed by simultaneous filling of back-fill material | Eiki Akimoto, Hamao Yamashiro, Hiroshi Sugahara, Akira Imagawa, Naoki Kitahashi +1 more | 2007-03-06 |