Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4451175 | Method for improving soft ground by sand drain method and cylindrical bag for use in same | Hiromichi Yamashita, Hideaki Mutsuro, Kenji Takagi | 1984-05-29 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4451175 | Method for improving soft ground by sand drain method and cylindrical bag for use in same | Hiromichi Yamashita, Hideaki Mutsuro, Kenji Takagi | 1984-05-29 |