Issued Patents 2011
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7952020 | Water stopping structure and water stopping method | Kouichi Yamamoto, Shigemi Hashizawa | 2011-05-31 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7952020 | Water stopping structure and water stopping method | Kouichi Yamamoto, Shigemi Hashizawa | 2011-05-31 |