Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6881014 | Screwed steel pile and method of construction management therefor | Eiichiro Saeki, Tomoki Takeda | 2005-04-19 |
| 6394704 | Screwed steel pile and method of construction management therefor | Eiichiro Saeki, Tomoki Takeda | 2002-05-28 |