Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4547870 | Velocity hydrophone | Charles Maerfeld, Claude Gragnolati | 1985-10-15 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4547870 | Velocity hydrophone | Charles Maerfeld, Claude Gragnolati | 1985-10-15 |