Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4345533 | Semi-submerged ship | — | 1982-08-24 |
| 4309172 | Ship with improved stern structure | Hitoshi Narita, Hikaru Yagi | 1982-01-05 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4345533 | Semi-submerged ship | — | 1982-08-24 |
| 4309172 | Ship with improved stern structure | Hitoshi Narita, Hikaru Yagi | 1982-01-05 |