Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4363630 | Ship's hull with a helical channel ahead of each propeller and method of establishing the shape of the same | — | 1982-12-14 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4363630 | Ship's hull with a helical channel ahead of each propeller and method of establishing the shape of the same | — | 1982-12-14 |