Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9816247 | Lid for underground structure | Eiichiro Saeki, Norio Shinohara | 2017-11-14 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9816247 | Lid for underground structure | Eiichiro Saeki, Norio Shinohara | 2017-11-14 |