Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6746287 | Underwater propelling apparatus which stably carries out a propelling operation and a steering operation | Ikuo Yamamoto | 2004-06-08 |
| 6680876 | Natator in water tank, controlling apparatus and position measuring apparatus thereon | Kanji Isomichi | 2004-01-20 |