Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5655938 | Variable buoyancy ballast and flotation unit for submerged objects or structures | John E. Huguenin, Michael D. Willinsky | 1997-08-12 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5655938 | Variable buoyancy ballast and flotation unit for submerged objects or structures | John E. Huguenin, Michael D. Willinsky | 1997-08-12 |