Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4224891 | Semi-submersible vessel having a sealed closed chamber of truncated ovoid shape | — | 1980-09-30 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4224891 | Semi-submersible vessel having a sealed closed chamber of truncated ovoid shape | — | 1980-09-30 |