Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6750898 | Topdressing method and apparatus therefor | Masakazu Toyoda, Kinya Masuda | 2004-06-15 |
| 6278937 | Method and apparatus for controlling the position of floating rig | Susumu Tanaka | 2001-08-21 |